A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps or any other kind of bracelet. A pocket watch is designed for a person to carry in a pocket, often attached to a chain.
Casio Computer Co., Ltd. is a Japanese multinational electronics manufacturing corporation headquartered in Shibuya, Tokyo, Japan. Its products include calculators, mobile phones, digital cameras, electronic musical instruments, and analogue and digital watches. It was founded in 1946, and in 1957 introduced the first entirely compact electronic calculator. It was an early digital camera innovator, and during the 1980s and 1990s, the company developed numerous affordable home electronic keyboards for musicians along with introducing the first mass-produced digital watches.
The G-Shock is a line of watches manufactured by the Japanese electronics company Casio, designed to resist mechanical stress, shock and vibration. G-Shock is an abbreviation for Gravitational Shock. The watches in the G-Shock line are designed primarily for sports, military and outdoors-oriented activities; all G-Shocks have a chronograph feature, 200 metre water resistance and an alarm, with either a digital display, analogue display or a combination of analogue and digital displays. Other features such as a countdown timer, world clock, and a backlight are included in most models. Newer high-end models in the line also feature GPS, directional, pressure and temperature sensors, radio-controlled time adjustment and Bluetooth time adjustment achieved via connecting to a smartphone via a dedicated application.
Eco-Drive is a model range of watches manufactured and marketed worldwide by Citizen Watch Co., Ltd., powered primarily by light. As of 2007, the company estimated the drive system had eliminated the disposal of ten million batteries in North America.
Citizen Watch Co., Ltd. is an electronics company primarily known for its watches and is the core company of a Japanese global corporate group based in Nishitokyo, Tokyo, Japan. In addition to Citizen brand watches, it is the parent of American watch company Bulova, and is also known for manufacturing small electronics such as calculators.
Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against the ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured watches were exposed to in a leakage test. The test pressure can be indicated either directly in units of pressure such as bar, atmospheres, or as an equivalent water depth in metres.
The Casio F-91W is a digital watch manufactured by Japanese electronics company Casio. Introduced in 1989 as a successor of the F-87W, it is popular for its low price and long battery life. As of 2011, annual production of the watch is 3 million units. Its ubiquitous use in the construction of timers for terrorist bombs prompted US officials to view the wearing of these watches as a "sign of al-Qaeda".
The Master of G is a line of G-Shock watches produced by Japanese electronics company Casio designed for usage in harsh environments. Many showcase new technology that Casio would eventually introduce into the G-Shock and ProTrek line of watches, such as an altimeter, digital compass and the Tough Solar feature.
The Rolex Oyster Perpetual Submariner is a line of sports watches designed for diving and manufactured by Rolex, resistant to water and corrosion. The first Submariner was introduced to the public in 1954 at the Basel Watch Fair. It was the first watch to be waterproof up to 100m. The Rolex Submariner is considered "a classic among wristwatches", manufactured by one of the most widely recognized luxury brands in the world. Due to its huge popularity, there are many homage watches by well-established watchmakers, as well as illegal counterfeits. The Rolex Submariner is part of Rolex's Oyster Perpetual line.
Anti-magnetic (non-magnetic) watches are those that are able to run with minimal deviation when exposed to a certain level of magnetic field. The International Organization for Standardization issued a standard for magnetic-resistant watches, which many countries have adopted.
Casio Databank is a series of digital watches and electronic personal organizers manufactured by Casio. The watches allow data storage for names and telephone numbers, memos, and in late editions, email addresses; in addition to usually providing a calculator as well as the standard features of a digital watch. While, the personal organizers allowed storage of names, telephones and fax numbers, memos and includes a 'secret' storage area for memos which required a password to access.
A helium release valve, helium escape valve or gas escape valve is a feature found on some diving watches intended for saturation diving using helium based breathing gas.
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.0 MPa (10 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m, though modern technology allows the creation of diving watches that can go much deeper. A true contemporary diver's watch is in accordance with the ISO 6425 standard, which defines test standards and features for watches suitable for diving with underwater breathing apparatus in depths of 100 m (330 ft) or more. Watches conforming to ISO 6425 are marked with the word DIVER'S to distinguish ISO 6425 conformant diving watches from watches that might not be suitable for actual scuba diving.
The Rolex Oyster Perpetual Date Sea-Dweller is a line of diver's watches manufactured by Rolex, with an underwater diving depth rating of 1,220 meters and up to 3,900 metres (12,800 ft) for the Sea-Dweller Deepsea model. Launched in 1967 with a diving depth of 610 metres, the Sea-Dweller features a gas escape valve, developed by the brand specifically for watches, which allows the helium trapped in the watch while decompressing to be released at a given pressure during decompression, while preserving the watch case's water resistance. Today's Sea-Dweller models are available in steel or steel and yellow gold, and have a 43 mm case.
Shock resistant is a common mark stamped on the back of wrist watches to indicate how well a watch copes with mechanical shocks. In a mechanical watch, it indicates that the delicate pivots that hold the balance wheel are mounted in a spring suspension system intended to protect them from damage if the watch is dropped. One of the earliest and most widely used was the Incabloc system, invented in 1934. Before the widespread adoption of shock-resistant balance pivots in the 1950s, broken balance wheel staffs were a common cause of watch repairs.
The Wave Ceptor series is a line of radio-controlled watches by Casio. Wave Ceptor watches synchronise with radio time signals broadcast by various government time services around the world. These signals transmit the time measured by atomic clocks accurate to one second in millions of years. By synchronizing daily with the signals, the Wave Ceptor watches achieve high accuracy, using a quartz crystal to keep time in the interim. Some radio watches, including some Wave Ceptors, are solar-powered, supported by a rechargeable battery. The watch displays may be fully digital, analog, or analog-digital. Hybrid Wave Ceptor models support GPS satellite reception of both time and location, in addition to broadcast signals.
STOWA is a German luxury watchmaker founded by Walter Storz in 1927 and is based in Engelsbrand, Germany. The name is a portmanteau of the founder's name, Storz Walter. From 1996 until 2021, STOWA was by Jörg Schauer, who also owns the Schauer watch brand and the DUROWE watch movement brand. July 1, 2021, Stowa became part of Tempus Arte GmbH & Co. KG, which also owns Uhrenmanufaktur Lang & Heyne Dresden, UhrenWerke-Dresden (UWD), as well as the Munich based company Leinfelder Uhren München.
Zodiac Watches, or simply Zodiac, is an American brand of Swiss-made watches founded in 1882 by Ariste Calame in Le Locle, Switzerland. The company mostly focuses on its dive watches through its Sea Wolf line, one of the first modern dive watches, which debuted in 1953 along with the Rolex Submariner and Blancpain Fifty Fathoms. Although Zodiac was acquired by Fossil Group in 2001, its manufacturing remained in Bienne, Switzerland. Zodiac and Fossil Group are headquartered in Richardson, Texas.
The Casio AE-1000W is a quartz digital watch manufactured by Japanese electronics company Casio. The watch was introduced in 2010 in the "Youth Series" range of watches designed to attract young buyers. The watch is popular for its simple classic design, comfortable wearability and a host of features including world time for a low price. The AE-1000W has several other variations as part of the AE-series of watches in the Casio Youth Series.
