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A watch is a timepiece intended to be carried or worn by a person.wikipedia
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timepiecemechanical clockanalog clock
A watch is a timepiece intended to be carried or worn by a person.
Watches and other timepieces that can be carried on one's person are often distinguished from clocks.

Mechanical watch

mechanicalmechanical watchesmanual winding
These are called mechanical watches.
A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function electronically via a small battery.


smart watchsmartwatcheswatch phone
Developments in the 2010s include smartwatches, which are elaborate computer-like electronic devices designed to be worn on a wrist.
A smartwatch is a wearable computer in the form of a wristwatch; modern smartwatches provide a local touchscreen interface for daily use, while an associated smartphone app provides for management and telemetry (such as long-term biomonitoring).

Watch strap

A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet.
A watch strap, watch band, or watch bracelet is a bracelet that straps a wrist watch onto the wrist.


The study of timekeeping is known as horology.
Clocks, watches, clockwork, sundials, hourglasses, clepsydras, timers, time recorders, marine chronometers, and atomic clocks are all examples of instruments used to measure time.


chronographschronographic wristwatchtimer
Most electronic quartz watches, on the other hand, include time-related features such as timers, chronographs and alarm functions.
A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch.

Radio clock

radio-controlled clocksGPS clockRadio-controlled clock
Furthermore, some modern smartwatches even incorporate calculators, GPS and Bluetooth technology or have heart-rate monitoring capabilities, and some of them use radio clock technology to regularly correct the time.
A radio clock or radio-controlled clock (RCC) is a clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

Alarm clock

clock radioalarmalarm clocks
Most electronic quartz watches, on the other hand, include time-related features such as timers, chronographs and alarm functions.
Alarm clocks are also used in mobile phones, watches, and computers.

List of most expensive watches sold at auction

most expensive watches ever sold at auctionmost expensive watch ever sold at auctionmost expensive watches ever sold at auctions
As of 2018, the most expensive watch ever sold at auction is the Patek Philippe Henry Graves Supercomplication, which is the world's most complicated mechanical watch until 1989, fetching 24 million US dollars (23,237,000 CHF) in Geneva on November 11, 2014.
This list of most expensive watches sold at auction documents the watches sold at auction worldwide for at least 1.5 million US dollars.

Movement (clockwork)

movementmovementswatch movement
Today, most watches in the market that are inexpensive and medium-priced, used mainly for timekeeping, have quartz movements.
In horology, a movement, also known as a caliber, is the mechanism of a watch or timepiece, as opposed to the case, which encloses and protects the movement, and the face, which displays the time.

Quartz crisis

quartz revolutionadventCentre Electronique Horloger
Historically, this is called the quartz revolution.
In 1954, Swiss engineer Max Hetzel developed an electronic wristwatch that used an electrically charged tuning fork powered by a 1.35 volt battery.


TudorRolex watchRolex SA
Hans Wilsdorf moved to London in 1905 and set up his own business, Wilsdorf & Davis, with his brother-in-law Alfred Davis, providing quality timepieces at affordable prices; the company later became Rolex.
Rolex SA is a Swiss luxury watch manufacturer based in Geneva, Switzerland.


JeanRichardGirard Perregaux
In continental Europe Girard-Perregaux and other Swiss watchmakers began supplying German naval officers with wristwatches in about 1880.
Girard-Perregaux SA is a luxury Swiss watch manufacture with its origins dating back to 1791.

Balance wheel

foliotbalancecompensation balance
During most of its history the watch was a mechanical device, driven by clockwork, powered by winding a mainspring, and keeping time with an oscillating balance wheel.
Until the 1980s balance wheels were the timekeeping technology used in chronometers, bank vault time locks, time fuzes for munitions, alarm clocks, kitchen timers and stopwatches, but quartz technology has taken over these applications, and the main remaining use is in quality mechanical watches.

Clock face

dialfacehour hand
This innovation increased watches' accuracy enormously, reducing error from perhaps several hours per day to perhaps 10 minutes per day, resulting in the addition of the minute hand to the face from around 1680 in Britain and 1700 in France.
A clock face, or dial, is the part of an analog clock (or watch) that displays the time through the use of a fixed-numbered dial or dials and moving hands.

Pocket watch

pocketwatchwatch fobfob watch
A pocket watch is designed for a person to carry in a pocket.
A pocket watch (or pocketwatch) is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.


AccutronBulova Watch CompanyBulova Watches
Introduced by Bulova in 1960, they use a tuning fork with a precise frequency (most often 360 hertz) to drive a mechanical watch.
It manufactures watches and clocks and is based in New York City.

Quartz clock

quartz watchquartzquartz movement
In the 1960s the electronic quartz watch was invented, which was powered by a battery and kept time with a vibrating quartz crystal. The commercial introduction of the quartz watch in 1969 in the form of the Omega Beta 21 and the Seiko Astron was a revolutionary improvement in watch technology.
Since the 1980s, when the advent of solid-state digital electronics allowed them to be made compact and inexpensive, quartz timekeepers have become the world's most widely used timekeeping technology, used in most clocks and watches as well as computers and other appliances that keep time.

Patek Philippe SA

Patek PhilippePatek Philippe & Co.Patek Phillipe
In 1970, 18 manufacturers exhibited production versions of the beta 21 wristwatch, including the Omega Electroquartz as well as Patek Philippe, Rolex Oysterquartz and Piaget.
Patek Philippe SA is a Swiss luxury watch and clock manufacturer founded in 1839, located in Canton of Geneva and the Vallée de Joux.


K. HattoriHattori SeikoLorus
In 1959 Seiko placed an order with Epson (a daughter company of Seiko and the 'brain' behind the quartz revolution) to start developing a quartz wristwatch.
Seiko Holdings Corporation, commonly known as Seiko, is a Japanese holding company that has subsidiaries which manufactures and sells watches, clocks, electronic devices, semiconductors, jewelries, and optical products.

Electric watch

electromechanical watchelectronic watchelectronic watches
Tuning-fork watches were rendered obsolete when electronic quartz watches were developed.
In horology the term electric watch is used for the first generation electrically-powered wristwatches which were first publicly displayed by both Elgin National Watch Company and LIP on the 19th of March 1952 with working laboratory examples in Chicago and Paris.

Astron (wristwatch)

Astron35 SQ AstronElectronic Quartz Wristwatch
The commercial introduction of the quartz watch in 1969 in the form of the Omega Beta 21 and the Seiko Astron was a revolutionary improvement in watch technology.
The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch.

Thomas Tompion

The verge escapement was replaced in quality watches by the cylinder escapement, invented by Thomas Tompion in 1695 and further developed by George Graham in the 1720s.
Due to his relationship with the scientist Robert Hooke he made some of the first watches with balance springs, these had the potential to be much more accurate than earlier watches.

The Swatch Group

Swatch GroupSwatchSwatch Group USA
After a consolidation of the mechanical watch industry in Switzerland during the 1970s, mass production of quartz wristwatches took off under the leadership of the Swatch Group of companies, a Swiss conglomerate with vertical control of the production of Swiss watches and related products.
The Swatch Group Ltd is a Swiss manufacturer of watches and jewellery.

Button cell

CR2032LR44coin cell
For quartz wristwatches, subsidiaries of Swatch manufacture watch batteries (Renata), oscillators (Oscilloquartz, now Micro Crystal AG) and integrated circuits (Ebauches Electronic SA, renamed EM Microelectronic-Marin).
Button cells are used to power small portable electronics devices such as wrist watches, pocket calculators, artificial cardiac pacemakers, implantable cardiac defibrillators, automobile keyless entry transmitters, and hearing aids.