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 There are also chronographs with a center seconds hand which can be started, stopped and brought back to zero using one or two push-button on the side of the watch. Other additional functions include second time zone, alarm, moonphase, repeater, perpetual calendar, etc. Generally speaking, on may say that a simple mechanical watch (hours, minutes and seconds hands) should include at least fifteen jewels located in the places most subject to wear due to friction. It should be fitted with a shock-absorbing system on the balance, a good quality balance-spring and an unbreakable spring. In 1908, Rolex was founded by Mr. Hans Wilsdorf, a German National Citizen. Initially the company was named Wilsdorf & Davis as Wilsdorf founded company together with his brother in law. Soon after its launch in 1952, the NAVITIMER chronograph became a favorite with pilots. In addition to its ability to measure short times, this wrist instrument is equipped with a "navigation computer", a circular slide rule able to handle all airborne navigation calculations, such as climbing times or fuel consumption rate, and even to convert miles into nautical miles or kilometers. This first NAVITIMER was officially chosen by the AOPA (Aircraft Owners and Pilots Association), encompassing pilots from around the world. rolexexplorer2watches Today, this model has rolexexplorer2watches lent its name to a line of original mechanical chronographs, featuring a wealth of exclusive technical features and naturally all fitted with the famous slide rule. The PROFESSIONAL line encompasses the BREITLING chronographs most specifically tailored to the world of aviation. From the EMERGENCY built-in microtransmitter to the electronic sophistication of the B-1, along with the ease of handling typical of AEROSPACE models, BREITLING places its finest technology in the service of pilots. At Patek Philippe important moments in history have always inspired us to push forward the accepted boundaries of the watch making art: with the Star Caliber 2000 we have added yet another proud rolexexplorer2watches watch making milestone. rolexexplorer2watches On the Star Caliber 2000 microsite you will discover a totally new combination of stunning complications for which six patents have been filed, elevating the status of this enchanting pocket watch to unprecedented levels of complexity. The scintillating gleam of flawless Top Wesselton diamonds now also adorns our exquisite new Twenty~4® watches in rolexexplorer2watches 18K rose or white gold. A thoroughly modern classic, the Twenty~4® look has also inspired stylish jewelry to subtly accent your personal style. your online source for wholesale watches
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