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Fashion wristwatch named GUESS Women's U0525L1 Interchangeable Wardrobe Silver-Tone Multi-Function Watch Set with Genuine Lea... This watch value is (109.0, 'USD').
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Article GUESS Women's U0525L1 Interchangeable Wardrobe Silver-Tone Multi-Function Watch Set with Genuine Lea.. has a rating of 5.0 based on 9 customer marks
Casual women watch is a small clock to be carried or worn by a person. It is designed to work in spite of movements caused by the activities of the person. The clock is designed to be worn on the wrist, which are linked with a watch strap or a different type of a bracelet. Pocket watch is designed for a person to carry in your pocket.Watch developed in the 17th century from spring powered clocks, which appeared in the 14th century. The first watches were strictly mechanical, clockwork drive. As technology has progressed, mechanical devices, which are used to control the speed per hour, have been largely replaced by vibrating quartz crystal, producing precise timing of electronic pulses. Some watches use radio technology watch regularly corrected time. The first digital electronic watch was developed in 1970thMost inexpensive and medium price watches used mainly for timekeeping are electronic watches with quartz movement. Expensive collectible watches valued more for refined craftsmanship, aesthetic appearance and glamorous design as for simple timekeeping, often they have purely mechanical movements and are powered by springs, even though these movements are generally less accurate and more expensive than electronic. Various additional features, called "complications" such as moon-phase display and various types of tourbillon are sometimes included. Modern watches often display the day, date, month and year, and electronic watches may have many other functions. Related time functions such as watches, chronographs and alarm functions are common. Some modern models include calculators, using GPS technology or have the capacity to monitor heart rate.Hours with GPS receivers are used not only to determine their position. They also receive and use time signals from the satellites, which have essentially completely accurate timekeepers make, even over long periods of time.Study timekeeping is known as horology. History Hours evolved from transmission-spring powered clocks, which first appeared in Europe of the 15th century. Watches were often worn in the pockets of the 17th century. One account says that the word "watch" came from the Old English word woecce which meant "watchman", as it was with the city guards used to track their movements at work. Another says that the term originates from the 17th century sailors, using new mechanisms for time, the length of their boat watches (duty shifts).A big step forward in precision occurred in 1657 with the addition of the balance spring to the balance wheel, the invention at issue, both during and since the Robert Hooke and Christiaan Huygens. This innovation increases the accuracy of watches "very, reducing the number of errors may have a few hours a day, maybe 10 minutes a day, which resulted in the addition of the minute hand on the face of about 1,680 in the UK and 1,700 in France.Increased precision wheel balance draws attention to the mistakes made by other parts of the movement, igniting a wave of two century watchmaking innovation created. The first thing that needs to be improved was emigration. Verge escapement was replaced within hours by high-quality cylinder escapement invented by Thomas Tompion in 1695 and George Graham developed further in the 1720thImprovements in production, such as tooth-cutting machine designed by Robert Hooke be some increase in production volume monitored, although finishing and assembly is still done by hand until well into the 19th century.The main reason for the error in the balance wheel clock with the changes in the elasticity of the balance spring from a temperature change caused, was solved by invented in 1765 by Pierre Le Roy and Thomas improved EARNSHAW bimetalmetallic temperature to replace the balance wheel. The lever escapement is the most important technological breakthrough, and was invented by Thomas Mudge in 1759 and Josiah Emery improved in 1785, although only gradually began to apply from around 1800 onwards, mainly in the UK.British prevailed in watch production, for a large part of the 17th and 18th centuries, but has maintained a system of production that was directed to high-quality products for the elite. Nevertheless, it was an attempt to modernize the production of clock with mass production techniques and the use of duplication of tools and machines to the British Watch Company in 1843, was in the United States, this system took off. Aaron Lufkin Dennison factory started in 1851 in Massachusetts, which is used interchangeable parts, and in 1861 he was running a successful company registered as Waltham Watch Company. WristwatchThe concept of a wristwatch goes back to the earliest production of watches in the 16th century. Elizabeth I of England received a wristwatch of Robert Dudley in 1571, which is described as a hands hour.Since the beginning of the watches were worn almost exclusively women, men, used in the pocket watches of the early 20th stoletja.Zapestne watches were first worn by soldiers towards the end of the 19th century, when the importance of synchronization of maneuvers during the war, without being able to unveiled a plan to the enemy through signage is increasingly recognized. Garstin Company in London patented a "watch wristlet" design in 1893, but were probably produce similar motifs from 1880. Officials in the British army began to use watches in the colonial military action in 1880 as the Anglo-Burma 1885. During the Boer War War, the importance of coordinating the movement of troops and synchronization attacks against highly mobile Boer rebels have become the most important, and the use of wristwatches and subsequently became widespread among the officer class. The company Mappin & Webb began production of their successful "campaign watch" for soldiers during the campaign in Sudan in 1898 and ramped up production for the Boer War a few years later.These early models were basically standard pocket equipped with a leather belt, but by the early 20th century, manufacturers began producing dedicated wristwatches. Swiss company Dimier Frres & Cie patented design wristwatch with the now standard wire ears in 1903. Hans Wilsdorf moved to London in 1905 and set up his own business with his brother-in-law Alfred Davis, Wilsdorf & Davis, which ensures quality at affordable Hours prices; The company later became the Rolex. Wilsdorf early convert to the wristwatch, and the contract Aegler Swiss company for the production line of wristwatches.The impact of the First World War significantly shifted public perception about the appropriateness of a male wristwatch and opened the mass market in the postwar obdobju.Plazee barrage of artillery tactics developed during the war, requires precise synchronization between the artillery gunners and infantry advancing behind the dam. Service hours produced during the war have been specially designed for the rigors of the trench warfare, with luminous dials and unbreakable glass. British War Department began issuing watches to combatants of 1917. By the end of the war, almost all enrolled male wearing a wristwatch, and after it was their demobilization, fashion soon caught on: British horological Journal wrote in 1917 that "wristlet watch it Sterner sex little used before the war, but now it looks on the wrist almost every man in uniform, and a number of men in civilian clothes." By 1930 the ratio wrist- for pocketwatches was 50 to 1. The first success self-winding system was invented by John Harwood in 1923rdThe introduction of the quartz watch in 1969, was a revolutionary improvement in watch technology. In place of the balance wheels oscillate at 5 beats per second, used quartz crystal resonator, which vibrates to 8192 Hz, battery-powered oscillating circuit. Since 1980 he has been on the market longer than quartz watches mechanical nature.Rare watches were traditionally used as a means of investment. Between 2004 and 2014 hours of classical rose in value by more than 5% per year on average. MovementMove the clock mechanism, which measures over time and displays the current time (and possibly other information, including the date, month and day). Movements may be entirely mechanical in its entirety electronically (potentially with no moving parts), or a mixture of obeh.Veina watches intended mainly for timekeeping today electronic movements, mechanical hands on the clock face showing the time.Mechanical movement Compared with electronic motion, mechanical watches are less precise, often with errors seconds per day, and are sensitive to the position, temperature and magnetism. They are also expensive to produce, require regular maintenance and adjustments, and are more prone to failures. Nevertheless, crafts mechanical watches still attracts the attention of work-hour buying public, especially among watch collectors. Skeleton watches are designed to leave a visible mechanism for aesthetic purposes.Mechanical movement of the locking mechanism used to control and limit the unwinding and winding portions of the spring, converting what would otherwise simply unwinding in a controlled and regular release of energy. Mechanically apply the balance wheel, together with the balance-spring (also known as a spring) to control the movement of the gear system to clock in a manner analogous to that of a pendulum of a pendulum clock. Tourbillon, an optional part of the mechanical movement, the rotation of the frame for the escapement, which is used to eliminate or reduce the effects of gravitational bias in timekeeping. Due to the complexity of the tourbillon design, they are very expensive, and only found in luxury watches.Pin-lever escapement (called movement Roskopf the inventor, Georges Frederic Roskopf), which is a cheaper version of a fully levered movement, was manufactured in large quantities many Swiss producers as well as Timex, until replaced by quartz gibanja.Tuning-fork watches use a type electromechanical movement. By BULOVA introduced in 1960, used a tuning fork with a precise frequency (usually 360 hertz) to drive a mechanical watch. The task of converting electronically pulsed fork vibration in rotary movements via two tiny jeweled fingers, called pawls. Tuning-fork watches are outdated when they developed the electronic quartz watches. Quartz watches were cheaper to produce, but they are more accurate.Traditional mechanical watch movements use spiral spring appoint a leader as an energy source. The watches must be rewound regularly in the spring by the user by turning the watch crown. Antique pocketwatches are wound by inserting a special key in the hole at the back side of the watch, and by turning. Most modern watches are designed to run for 40 hours on a winding and, therefore, is to be wound on the day of, and some to run for a few days and some were 192-hour moved and wound week. Automatic watchesSelf-winding or automatic watch is one that rewinds the mainspring of a mechanical movement with the natural movements of the body to the user. The first self-winding mechanism for pocket watches invented in 1770 by Abraham-Louis PERRELET, but the first "self-winding" or "automatic", the time was an invention of the British watch repairer named John Harwood in 1923rdThis type of watch winds itself which does not require special action by the user. It uses an eccentric weight, which is called a winding rotor, which rotates with the movement of the wrist to the user. Back-and-forth movement winding rotor couples to a ratchet, which spearhead avtomatino.Self-winding watches usually be wound manually to keep them running when not worn, or if the user moves the wrist to keep the watch wound unsatisfactory.Swatch Group in April 2014 began sistem51 wristwatch. It has a purely mechanical movement, consisting of only 51 parts, including a new self-winding mechanism with a transparent oscillating weight. So far, only a mechanical completely manufactured in a fully automated production line. The low parts count and automated assembly would be cheap Swiss mechanical clock, which can be regarded as the successor movements Roskopf, although higher quality. Electronic movementElectronic movement, also known as a quartz movement, which have little or no moving parts, other than quartz crystal, which is made to vibrate by the piezoelectric effect. The difference in voltage for the crystal, which is responsive to the changing shape so in combination with some of the electronic components to function as an oscillator. It resonates in a special high-stability frequency used for accurate tempo timekeeping mechanism. Most quartz movements are mostly electronic but are geared to drive mechanical hands on the face of the clock to ensure that traditional analog time display function, most consumers still prefer.In 1959 Seiko Epson given contract of (a subsidiary of Seiko and "brain" behind the quartz revolution), to begin to develop a quartz wristwatch. The project was codenamed 59a. The Tokyo Summer Olympics 1964 Seiko had a working prototype of portable quartz clock which was used as a measurement of time throughout dogodku.Prvi prototypes of electronic quartz wristwatch (not a portable quartz watches such as Seiko timekeeping devices in the Tokyo Olympics in 1964 ) was made by the CEH research laboratory in Neuchtel, Switzerland. From 1965 to 1967, was a pioneering development work in miniature 8192 Hz quartz oscillator, thermal compensation module and the inhouse-dedicated integrated circuit (unlike hybrid circuits used in the later Seiko Astron wristwatch). As a result, BETA 1 prototype set new performance records timekeeping at the International chronometric competitions held at the Neuchtel Observatory in 1967. In 1970, 18 manufacturers exhibited the production version beta 21 wristwatch, including Omega Electroquartz as well as Patek Philippe, Rolex and Piaget OysterquartzThe first quartz watch to enter production was the Seiko 35 SQ Astron, which hit the shelves on 25 December 1969, swiftly followed by the Swiss Beta 21, and then a year later a prototype of one of the world's most accurate watches per day: Omega Marine Chronometer.Thanks to technology, which was developed by the Swiss, Seiko would not patent the entire movement quartz wristwatch, which other manufacturers to participate in the rapid growth and development to market quartz watch, It ended - in less than a decade - almost 100 years of dominance by a mechanical wristwatch estate. Modern movement quartz are produced in very large quantities, and even the cheapest watches are usually kremena.Ker movement may be mechanical movements usually off for a few seconds, day, cheap quartz movement in the child's wristwatch, still accurate to within half a second per day - ten times better than a mechanical movement.After consolidation of the mechanical watch industry in Switzerland between 1970 and mass production of quartz watches took off under the leadership of Swatch Group companies, a Swiss conglomerate with vertical control of the production of Swiss watches and related products. For quartz watches, Swatch subsidiaries manufacture of watch batteries (Renata), oscillators (OSCILLOQUARTZ now Micro Crystal AG) and integrated circuits (Ebauches Electronic SA, renamed MICROELECTRONIC-EM Marin). The launch of the new SWATCH brand in 1983 was marked by bold new styling, design and marketing. Today, the Swatch Group has maintained its position of the largest global watch company.Seiko efforts that combine quartz and mechanical movements bore fruit after 20 years of research, leading to the introduction of the Seiko Spring Drive, initially in a limited domestic production in the market in 1999 and in the world in September 2005thSpring Drive keeps time in the quartz standards without the use of batteries that use traditional mechanical gear train is powered by a spring, without the need to balance the bike either.Radio time signal watches are a type of electronic quartz clock that is synchronized (time transfers) of their time with an external time source, such as the atomic clock time signal from GPS navigation satellites, the German DCF77 signal in Europe, WWVB in the US, and others. Developments of this kind can - among other things - to synchronize the time of day and date, leap-year status, and the status of daylight saving time (on or off). However, except for the radio, these clocks are normal quartz watches in all other respects.Electronic watches require electricity as an energy source, and some mechanical movements and hybrid electronic mechanical movements also require electricity. Usually electricity, which is replaceable battery. First use of electricity in an hour was as a substitute for the drive spring to remove the need for overclocking. The first electric-powered watch, Hamilton Electric 500, was released in 1957 by the Hamilton Watch Company of Lancaster, Pennsylvania.Watch battery (strictly speaking, the cells, such as the battery is composed of several cells) they are designed specifically for their intended purpose. They are very small and provide a small amount of power continuously for a very long time (several years or more). In most cases, changing the battery requires a trip to watch-repair store or watch dealer; This is especially true of watches that are water-resistant, such as special tools and procedures for the watch to remain waterproof after replacing the battery.Silver-oxide and lithium batteries are popular today; mercury batteries, formerly quite common, are no longer applicable, for environmental reasons. Cheap batteries can be alkaline, the same size as silver-oxide cells, but provides a shorter lifespan. Rechargeable batteries are used in some solar-powered watches.Some electronic watches are powered by the movement of uporabnika.Na example, kinetic powered watches Seiko quartz movement is applied to the user arm turning a rotating weight, which causes a small generator to power to charge the battery that operates on the hour. The concept is similar to the separate winding of the spring movements, with the exception that the electric energy, instead of a mechanical spring tension.Solar powered watches are powered by light. The photovoltaic cell of the face (dial) per hour converts light into electrical energy, which is used to charge the battery or capacitor. Movements hour draws its power from a rechargeable battery or capacitor. As long as the clock regularly exposed to fairly strong light (such as sunlight) should never require replacement batteries. Some models require only a few minutes away from sunlight, to ensure the weeks of energy (as in the Citizen Eco-Drive). Some of the early sundials in 1970 had innovative and unique designs for the adoption of a set of solar cells, which are necessary for their power (Synchronar, Nepro, SICURA and some models that Cristalonic, Alba, Seiko and Citizen).As the decades progressed and the efficiency of solar cells increased, while power requirements of movement and display decreased sundials started designed to look like other conventional watches.Rarely used energy source is the temperature difference between the hand to the user and the environment (as used in the Citizen Eco-Drive Thermo). Display Analog Traditionally, the clock displays the time in analog format with numbered dial on which are mounted at least a rotating hour hand and longer, rotating minute kazalcem.Veliko watches also include a third arm, which shows the current second of the current minute. Watch powered by quartz usually have a second hand that grabs every second until a second marker. Watch powered by mechanical movement appears to have a snow the other hand, although it is not actually slipping; with only moves in small increments, typically 5.1 seconds, which corresponds to the pulse (half period) of the balance wheel. In some escapements (eg duplex mature), hand moves once every two beats (whole period) in the balance wheel, usually 2/1 second in those hours, or even every four beats (two periods, 1 second), double the duplex escapement. Truly sliding hand is achieved by the tri-synchro regulator Spring Drive watches. All hands are normally mechanical, physically rotating on the dial, although there were a few hours produced by the "hands" that simulated the liquid crystal display.The analog time display is almost universal clock sold as jewelry or collectibles, and this time, a range of different styles of hands, numbers and other aspects of the analog dial is very broad. The watches sold for timekeeping, analog display is still very popular because many people are easier to read than digital display; but the timing clocks emphasis on clarity and accurate reading of time in all conditions (clearly marked numbers may be visible hands, large clock faces, etc.). They are specifically designed for the left wrist with the stem (the button used to change the time) on the right side of the guard; This makes it easy to change the time, without removing the clock from zapestja.To in the case where the right-handed and the clock is to be worn on the left wrist (as is usually done). If one is left-handed and wears a watch on the right wrist, it is necessary to remove the watch from the wrist to reset the time or wind the clock.Analog clock, as well as watches are often marketed showing display time around 01:50 or 10:10. This creates a visually pleasing smile like surface on the upper half hours, in addition to surrounding the name of the manufacturer. Digital screens often display the time 0:08, where the increase in the number of active segments or dots gives a positive feeling.Tactile Tissot, the Swiss luxury watchmaker, makes a wristwatch Silen-T with a touch sensitive face that vibrates to help the user to tell the time without eye.Watch bezel features raised bumps every hour for coffee; After briefly touching the face of the watch, motility, running a finger around the frame clockwise. When your finger reaches the bump showing clock, watch vibrates continuously, and when your finger reaches the bump, which marks a moment, watch vibrates occasionally.Hours eons, based in Washington DC firm that has launched its first tangible analog wristwatch to "Bradley", dated 11 July 2013 on the website Kickstarter. The device is primarily intended for-impaired users, which can be used in the watch of two bearings to determine the time, but it is also suitable for general use. The watch features raised markings on each hour and two movable, magnetically mounted ball bearings. One ball bearing, at the edge of time, indicating the time, while the other, on the face, indicating a minute. DigitalDigital display simply displays the time in the form of numbers, for example, 00:08 rather than the short side facing number 12 and the long arm of 8/60 reverse dial. Numbers are usually shown as a seven-segment display.The first digital mechanical pocket watches appeared in the late 19th century. In 1920 the first digital mechanical watches appeared.The first digital electronic watch, Pulsar LED prototype in 1970, was the Hamilton Watch Company and Electro-Data, by George H. Thiess founded jointly developed.John Bergey, Head of the Division of Hamilton Pulsar, said that he was inspired to produce a digital timepiece by the then-futuristic digital clock that Hamilton themselves that the 1968 science fiction film 20011: A Space Odyssey. On 4 April 1972, the Pulsar was finally ready in 18 carat goldgold and sells for 2100. He had a red-emitting diode (LED) display.Digital LED watches were very expensive and out of reach to the common consumer until 1975, when Texas Instruments started to mass-produce LED watches inside a plastic housing. These watches, which for the first time at retail for only 20, discounted to 10 in 1976 saw Pulsar lose 6,000,000 and Pulsar brand sold by Seiko.Early LED clock, which was quite problematic is the Black Watch and the British company Sinclair Research in 1975. It was sold only for a few years as production problems and returns sold (defective) product compel companies to cease production .Most watches with LED displays requires the user to press the button to see the time displayed for a few seconds, because LEDs used so much power that they can not keep working to neprekinjeno.Ponavadi color LED display is red. Watches with LED displays are popular for a few years, but soon the LED displays replace liquid crystal displays (LCD), which use less battery power and were much more convenient in use, the display is always visible and without the need for a shift button before seeing time . Only those you had to press a button to light the screen with a small bulb, LED lighting later.The first LCD watch with a six-digit LCD was 1973 Seiko 06LC, although various forms of early LCD watches with the four-digit display on the market since 1972, including the 1972 Gruen Teletime LCD Watch, and Cox Electronic Systems Quartz. In Switzerland, Ebauches Electronic SA presented a prototype eight-digit LCD wristwatch that shows the date and time on MUBA Fair, Basel in March 1973 with the help of Twisted nematic LCD Brown, Boveri & Cie, Switzerland, which has become a supplier of LCD manufactured by Casio for CASIOTRON watch in 1974.The problem with liquid crystal displays is to use polarized light. For example, if a user wearing polarized sunglasses, you can watch hard to read due to the polarization plane of the screen is approximately perpendicular to the glasses. If the light that illuminates the screen polarized, for example, in the case of the blue sky, the screen may be difficult or impossible to read.Since 1980, a digital clock technology has greatly improved. In 1982 Seiko produced by Seiko Watch TV, which had a television screen installed and Casio produced a digital clock with thermometer, as well as others that could translate 1,500 Japanese words in angleini.Leta 1985 Casio produced the CFX-400 scientific calculator watch. In 1987, Casio produced a watch that could dial the phone number and Citizen revealed that which would respond to your voice. In 1995 Timex watch issued which allowed the flexibility to transfer and store data from your computer on your wrist. Some watches such as Timex DATALINK USB, characteristic of dot matrix displays.Since their peak in the late 1980s to the mid-1990s high-tech fad, digital watches had become simpler, less expensive time pieces with a little different between models. IlluminatedMany hours are displays that are illuminated, so that they can be used in the dark. Various methods were used to achieve this goal.Mechanical watches are often light color on their hands and hour marks. In the middle of the 20th century, was the radioactive material are often involved in color so that it will continue to glow without exposure to light. Radium was widely used but produced small amounts of radiation outside the guard, which could be hazardous. Tritium is used as a substitute because the radiation produces such low energy that can penetrate a watch glass. However, tritium is expensive - this should be done in a nuclear reactor - and has a half-life of only about 12 years, so the color stays light just a few years. Today, the tritium used in specialized watches, for example, for military purposes (see lighting tritium). For other purposes, the luminous color is sometimes used on analog displays, but no radioactive material is contained. This means that the screen is illuminated shortly after it is exposed to light and fast izgine.Ure containing batteries often have electric lights their displays. However lights consume much more power than electronic movement watch. Retention of the battery, the light is activated only when the user presses the button. Usually, the remains light lit for a few seconds after the button is released, allowing the user to move the arm out of the way.In some early digital watches, LED displays have been used, which could be read as easily in the dark, as in daylight. The user had to press a button to turn on the lights, which meant that the clock could not be read without a button is pressed, even in daylight.In some cheaper types of clocks, small light bulbs or LED backlight, which itself is not luminous. This usually causes very uneven lighting. Bulbs are very wasteful of electricity. Other clocks use the electroluminescent material to produce uniform backlighting of the display, against which it can be seen hands or figures.Talking hoursTalking watches are also available, designed for blind and visually impaired. Speak aloud time with the press of a button. This is a shortcoming disturbing others nearby, or at least warn everyone that the flexibility of checking the time. Tactile watches are rather avoid this awkwardness, but we are talking watches are an advantage for those who are not confident in their ability to read tactile hour security. ImpartialWrist watches with analog displays generally have a small button, which is called a crown, which can be used to set the time and in mechanical watches, the wind pomlad.Skoraj always the crown located on the right side of the watch. This makes it inconvenient to use, if the clock is to be worn on the right wrist. Usually, therefore, the hours wear on the left wrist, although flexibility is left-handed.In exceptional cases, the crown on the left side of the watch. This, for example, in order to prevent bathing in the wrist for golfers.Digital watches generally push-buttons which can be used for adjustment. Typically, they are equally easy to use in both the wrist. Tasks All watches provide the time of day, giving at least the hour and minute, and usually more. Most of the current date and often the day of the week as well. However, many watches also provide a lot of information beyond the basics of time and date. Some watches include alarms. Other elaborate and expensive watches, both wrist and pocket models include percussion mechanisms or Repeater functions, so that they could learn wearing time by the sound that comes from the guards. This announcement or striking feature is an essential feature of real time and such an hour different from ordinary watches. This feature is available in most digital watches.Complicated watch has one or more functions beyond the basic functions displays the time and date; such functionality is called a complication. Two popular complications are the chronograph complication, which is the ability to watch movement to function as a stopwatch, and Moonphase complication that show the lunar phase. Other complications are more expensive tourbillon, perpetual calendar, minute repeater and equation as.Resnino complicated watch has many of these complications at once (see Calibre 89 from Patek Philippe, for example). Some watches can also indicate the direction of Mecca and have alarms that can be set for all daily prayers. Among watch enthusiasts, complicated watches are especially collectible. Some watches include a 12-hour or 24-hour clock to UTC or GMT.Similar sounding terms chronograph chronometer and are often confused, although it means completely different things.Chronograph clock by adding duration timer, stopwatch frequent complications (as explained above), while the chronometer clock is a clock that meets the standard industry test for performance under predetermined conditions: chronometer is a high-quality, mechanical or thermo-compensation a movement that has been tested and certified for operation in a particular standard of accuracy by the COSC (Controle Officiel Suisse des Chronomtres). The concepts are different but not mutually exclusive; so watch can be chronograph, chronometer so or not.Many computerized wristwatches have been developed, but none had long-term commercial success, as they have an awkward user interfaces due to small screens and buttons, and short battery life. As miniaturized electronics become cheaper, watches have been developed containing calculators, tonometers, barometers, altimeters, compass with both hands to indicate the direction N / S, video games, digital cameras, keydrives, GPS receiver and mobile phones. Some astronomical clock indicates the phase of the Moon and other celestial phenomena. In the early 1980s Seiko marketed a watch television in njem.Takne hours also had a reputation as ugly and thus mainly geek toys. Several companies have however attempted to develop a computer contained in a wristwatch (see also wearable computer).Electronic sports watches that combines the measurement of time with GPS and / or tracking activities address the general fitness market and have the potential for commercial success (Garmin forerunner, Garmin Vivofit, Epson announced model series Swatch Touch).Braille watches are analog displays with raised bumps on the face, allowing blind users to tell the time. Their digital equivalents of use synthesized speech talk time on command. Usage Fashion Hand and antique pocket watches are often appreciated as jewelry or as collectible works of art rather than as an hour. This has created a number of different markets for wristwatches, ranging from very inexpensive but accurate watches (intended for any purpose other than telling the exact time) to extremely expensive watches that serve mainly as personal adornment or as examples of high achievement in miniaturization and precision engineering.Traditionally, men's dress watches for formal (business), semi-formal and formal wear goldgold, thin, simple and plain, but more robust, complex or sports watches, some consider it acceptable for such a dress. Some dresses hours a Cabochon crown on and dress watches many women, faces gemstones on her face, framed or bracelet. Some are made entirely of a faceted sapphire (corundum) .Veliko fashion and department stores offer a variety of less expensive, trendy "costume" hour (usually women), many of which are of a similar quality basic quartz watches, which feature bolder plans.In 1980, Swiss Swatch company hired graphic designers redesign a new annual collection irreparable hours.Trade in counterfeit watches to imitate expensive brands of watches, represents estimated at US 1 billion market per year. SpaceZero gravity and other extreme environmental conditions encountered by astronauts in space requires the use of specially tested watches. On 12 April 1961, Yuri Gagarin wore SHTURMANSKIE (transcription which actually means "navigator") wristwatch during his historic first flight into space. SHTURMANSKIE was made at the first Moscow factory. Since 1964, clocks were first factory in Moscow marked the brand "" transliterated as "Poljot", which means "flight" in Russian and is a tribute to a lot of space trips his hour was achieved. In the late 1970s, Poljot launched a new chrono movement, 3133rd Movement on 23 and jewel manual-winding (43 hours), amended Russian version of the Swiss VALJOUX 7734 since the early 1970s. Poljot 3133 were in the room by astronauts from Russia, France, Germany and Ukraine. On the arm of Valeriy Polyakov, Poljot 3133 chronograph movement based on the time set a record for the longest space flight in space zgodovini.Skozi 1960 they were tested a large selection of watches for durability and accuracy under extreme temperature changes and vibration. Omega Speedmaster Professional was selected by NASA, the US space agency.Heuer became the first Swiss watch in space thanks Heuer stopwatch, worn by John Glenn in 1962 when he tested friendship 7 on the first manned US orbital mission. Breitling Navitimer Cosmonaut has been designed with a 24-hour analog dial, in order to avoid confusion between the AM and PM, which have no meaning in space. It was first worn in space by US astronaut Scott Carpenter on 24 May 1962 in a capsule of mercury Aurora 7thSince 1994, Fortis is the exclusive supplier of manned space missions to the Russian Space Agency authorized. China National Space Administration (CNSA) astronauts wear spacewatches Fiyta. At Baselworld 2008 Seiko announced the creation of the first watch ever designed specifically for a space walk, Spring Drive spacewalk. Timex DATALINK is certified to fly NASA space missions and is one of the clocks is trained NASA for space travel. Casio G-Shock DW-5600C and 5600, DW 6900, DW 5900 and the flight-qualified by NASA for space travel.They have been applied Timex DATALINK different models with both cosmonauts and astronauts.Diving Hours can be crafted to become waterproof. These watches are sometimes called diving watches, they are suitable for scuba diving or saturation diving. International Organization for Standardization published a standard for water-resistant clock, which also prohibits the term "waterproof" is used in watches, which have many states sprejele.Vodoodpornost is achieved by the seals, forming a watertight seal to be used in conjunction with seal which is used, for example, to help to keep the water out.The material shall be tested to go as waterproof.None of the tests, which are ISO 2281, specific to the mark Resistant waters are suitable to qualify hour for diving. Such watches are designed for everyday life and must be water resistant during exercises such as swimming. You can wear them in different temperature and pressure conditions, but under no circumstances designed for scuba diving.The standards for diving watches is governed by international standard ISO 6425th The clocks are tested in static or stagnant water below 125% of the nominal (water) pressure, thus watch with an assessment of 200 meters be waterproof if it is stationary and under 250 meters of static water. Testing water resistance is significantly different from the non-diving watches, because every time that a fully tested. In addition to the standards of water resistance to at least 100 meters depth rating ISO 6425 also provides eight minimum requirements for mechanical watches diver diving (quartz and digital watches have slightly different requirements readability). For hours diver for saturation diving mixed gas has two additional requirements that must be met.Timepieces are classified by their degree of water resistance, which roughly means that in the next (1 meter 3.281 feet):Some clock line used instead of meters, which may then be multiplied by 10 and then subtract 10 to approximately the same assessment based meters. Therefore, 5 bar watch is equivalent to 40 meters uro.Nekatere hours are estimated in atmospheres (atm), which are about the same bar. Using the clock and not as a compass There is the traditional method by which the analog clock can be used to find north and south. The sun appears to move in the sky over a 24 hour period, while the hour hand of a 12-hour face takes twelve hours to complete one rotation. In the Northern Hemisphere, when the clock is rotated so that the hour hand points in the direction of the Sun, point halfway between the hour hand and 00 o'clock will be shown to the south. For this method to work in the southern hemisphere 12 is directed towards the Sun and the point halfway between the hour hand and 00 o'clock will show the north. In the summer time you can in the same way employees use the 01 o'clock instead of 12. This method is sufficiently precise to be useful only at relatively high latitudes. See main article.