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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 givenchywatches Association), encompassing pilots from around the world. givenchywatches and givenchywatches Today, this model has lent its name to a line of original mechanical chronographs, featuring a wealth of exclusive technical features and naturally givenchywatches all fitted with the famous givenchywatches slide rule. The PROFESSIONAL line encompasses the BREITLING chronographs most specifically givenchywatches 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. Rolex quality and expertise. The distinguishing characteristic of the first Rolex Oyster Watch, which today perpetuates givenchywatches its preeminent position, was the perfect marriage between case, crystal, and winding crown, resulting in a single pressure-proof unit. Today the Rolex Oyster case maintains the heritage by providing the strongest possible protection for the movement within, while givenchywatches at the same time conveying a distinctive elegance. The Rolex Watch creation of such a masterpiece places equal demands on the watchmaker''s technical and artistic skills, and exemplifies the constant striving for perfection that is Rolex. Rolex takes a full year to complete an Oyster movement with its 220 individual components. 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.
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