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Helium Release Valve
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. When saturation divers operate at great depths, they live under pressure in a saturation habitat with an atmosphere containing helium or hydrogen. Since helium atoms are the smallest natural gas particles, they are able to diffuse into the watch, past the seals which are able to prevent ingress of larger molecules such as water. This is not a problem as long as the watch remains under external pressure, but when decompressing, a pressure difference builds up between the trapped gas inside the watch case and the environment. Depending on the construction of the watch case and crystal, this effect can cause damage to the watch, such as the crystal popping off, as diving watches are designed primarily to withstand external pressure. Some watch manufacturers manage this effect by simply making the case strong enou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diving Watches
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 , the equivalent of . The typical diver's watch will have a water resistance of around , 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 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. To a large extent the diver's watch has been superseded by the personal dive computer, which provides an automatically initiated dive timer function along with real-time decompression computation and optionally other functions. History The history of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citizen Watch Co
Citizenship is a "relationship between an individual and a state to which the individual owes allegiance and in turn is entitled to its protection". Each state determines the conditions under which it will recognize persons as its citizens, and the conditions under which that status will be withdrawn. Recognition by a state as a citizen generally carries with it recognition of civil, political, and social rights which are not afforded to non-citizens. In general, the basic rights normally regarded as arising from citizenship are the right to a passport, the right to leave and return to the country/ies of citizenship, the right to live in that country, and to work there. Some countries permit their citizens to have multiple citizenships, while others insist on exclusive allegiance. Determining factors A person can be recognized or granted citizenship on a number of bases. Usually, citizenship based on circumstances of birth is automatic, but an application may be required. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Resistant Mark
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 (more commonly) as an equivalent water depth in metres (in the United States sometimes also in feet). An indication of the test pressure in terms of water depth does not mean a water-resistant watch was designed for repeated long-term use in such water depths. For example, a watch marked 30 metres water resistant cannot be expected to withstand activity for longer time periods in a swimming pool, let alone continue to function at 30 metres under water. This is because the test is conducted only once using static pressure on a sample of newly manufactured watches. As only a small sample is tested ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seiko
, commonly known as Seiko ( , ), is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced one of the first quartz watches and the first quartz watch with a chronograph complication. Seiko was a wristwatch manufacturer for Japanese soldiers during World War II. History 1881 founding to 1929 In 1881, Seiko founder Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" () in Tokyo. Kintarō Hattori had been working as clockmaker apprentice since the age of 13, with multiple stints in different watch shops, such as “Kobayashi Clock Shop”, ran by an expert technician named Seijiro Sakurai; “Kameda Clock Shop” in Nihonbashi; and “Sakata Clock Shop” in Ueno, where he learned how to both sell and repair timepieces. Around the time of Seiko's founding, watchmakers in Tokyo, Osaka, and Nagoya were studying and producing pocket watches based on Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DEL MAR
Del Mar is Spanish for "of the sea" or "from the sea". It may refer to: Places in the United States * Del Mar, California * Del Mar High School, located in San Jose, California * Del Mar racetrack, located in Del Mar, California * Del Mar Fairgrounds located in Del Mar, California Can also refer to the Delaware/Maryland area. People * Alexander del Mar (1836–1926), US political economist * Ennis Del Mar, a fictional character in ''Brokeback Mountain'' * Jonathan Del Mar (born 1951), British music editor and conductor, son of Norman * Norman Del Mar (1919–1994), British orchestral conductor, father of Jonathan * Walter Del Mar (1862–1944), American banker and travel writer Other * "Del Mar" (song), by Ozuna featuring Doja Cat and Sia, 2020 * Viña del Mar, a Chilean coast city * Café del Mar, a bar located in San Antonio, Ibiza * Del Mar, a Glasspar The Glasspar boat-building company was started in 1947 when Bill Tritt began building small fiberglass boat hulls in hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TAG Heuer
TAG Heuer S.A. ( ) is a Swiss luxury watchmaker that designs, manufactures and markets watches and fashion accessories, as well as eyewear and mobile phones manufactured under license by other companies and carrying the TAG Heuer brand name. The company began as Uhrenmanufaktur Heuer AG, founded in 1860 by Edouard Heuer in St-Imier, Switzerland. In 1985, TAG Group purchased a majority stake in the company, forming ''TAG Heuer''. In 1999, French luxury goods conglomerate LVMH bought nearly 100 percent of the Swiss company. The name ''TAG Heuer'' combines the initials of "Techniques d'Avant Garde" and the founder's surname. History TAG Heuer is based in La Chaux-de-Fonds, Switzerland, and is led by CEO Frédéric Arnault. Jack Heuer, great-grandson of the founder, is the honorary chairman. TAG Heuer maintains a watchmaking workshop in Cornol, Switzerland, and a watchmaking factory in La Chaux-de-Fonds. TAG Heuer's slogan is "Swiss Avant-Garde Since 1860". 1860 through 1880s I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oris (watches)
Oris SA is a Swiss luxury manufacturer of mechanical watches. The company was founded in 1904 and is based in Hölstein in the canton of Basel-Landschaft. History Genesis and early growth Oris was founded by Paul Cattin and Georges Christian in the Swiss town of Hölstein. They bought the recently closed Lohner & Co watch factory, and on June 1, 1904 the two men entered into a contract with the local mayor. They named their new watch company Oris after a nearby brook, and they began the industrial manufacture of pocket watches. In its founding year, Oris employed 67 people. In 1906, the firm opened an assembly plant and second factory in the nearby town of Holderbank. Another factory followed in Como in 1908. By 1911, Oris had become the largest employer in Hölstein, with over 300 workers. To entice more watchmakers, it built houses and apartments for its staff, and it expanded so that by 1929 it had additional factories in Courgenay (1916), Herbetswil (1925) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victorinox
Victorinox () is a knife manufacturer and watchmaker based in the town of Ibach, in the Canton of Schwyz, Switzerland. It is well known for its Swiss Army knives. The Swiss Army knives made by Victorinox are made of a proprietary blend steel from Germany and France. Since its acquisition of rival Wenger in 2005, it has become the sole supplier of multi-purpose knives to the Swiss army. It is the biggest manufacturer of pocket knives in the world; in addition, the company licenses its logo for watches, apparel, and travel gear. History Founding The company was founded in 1884 as ''Messerfabrik Carl Elsener'', the workshop of Karl Elsener in Ibach. Elsener, in 1891 co-founded ''Schweizerischer Messerschmiedverband'', an association of Swiss knife manufacturers. Elsener and his colleagues from this time delivered knives to the Swiss army. In 1892, most of Elsener's colleagues left the enterprise, as it became apparent that Solingen manufacturers could deliver at a lower p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzo Mechana
Enzo is an Italian given name derivative of the German name Heinz. It can be used also as the short form for Lorenzo, Vincenzo, Innocenzo, or Fiorenzo. It is most common in the Romance-speaking world, particularly in Italy and Latin America but lately also in France and Spain. People * Enzo Amendola (born 1973), Italian politician * Enzo Amore (born 1986), Ring name of American professional wrestler Eric Arndt * Enzo Bearzot (1927-2010), Italian football player and manager * Enzo Benedetto (1905–1993), Italian painter * Enzo Biagi (1920–2007), Italian journalist * Enzo Calzaghe (1949–2018), Anglo-Italian boxing trainer * Enzo Cesario (born 1980), Chilean track and road cyclist * Enzo Dara (1938–2017), Italian operatic bass * Enzo Emanuele (born 1977), Italian medical researcher and editor * Enzo Fernández (born 1995), French footballer * Enzo Ferrari (1898–1988), Italian race car driver, founder of Scuderia Ferrari and Ferrari S.p.A. * Enzo Ferrari (born 1942), Italia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panerai
Officine Panerai (also known simply as Panerai) is an Italian luxury watch manufacturer, and a wholly owned subsidiary of Compagnie Financière Richemont S.A. Officine Panerai designs, manufactures and markets watches through authorized dealers and company-owned stores worldwide. Giovanni Panerai (1825–1897) founded Officine Panerai in Florence, Italy in 1860. The company is headquartered in Geneva and manufactures watches in Neuchâtel, Switzerland using movements manufactured by Manufacture Horlogère ValFleurier. Panerai watches, designed and manufactured by Rolex SA, were worn by the frogmen of the Decima Flottiglia MAS in their operations during World War II. Notable products include the Luminor and Radiomir wristwatches. History Giovanni Panerai (1825–1897) opened up his first watch shop in Florence, Italy in 1860. Giovanni's grandson Guido Panerai (1873–1934) expanded the watch shop "Orologeria Svizzera" and took over his wife's family business, a mechanical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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