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Soon after its launch in 1952, longines 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 watch and longines able to handle all airborne navigation calculations, such as climbing times or fuel consumption watch and longines rate, and even to convert miles into nautical miles or watch kilometers. This first NAVITIMER was officially chosen by the AOPA (Aircraft Owners longines and Pilots Association), encompassing pilots from around the world. Today, this model has lent its name to a line of original mechanical chronographs, featuring a wealth of exclusive technical features and naturally watch all fitted with the famous slide rule. The PROFESSIONAL line encompasses the BREITLING chronographs most specifically longines tailored to the world of aviation. From the EMERGENCY built-in microtransmitter to the electronic sophistication of the B-1, along with the ease watch of handling typical of AEROSPACE models, BREITLING places its finest technology in the service of pilots. There are longines also chronographs with a center seconds hand watch which can be started, stopped and brought longines back to zero using one or two push-button on the side of the watch. Other additional functions include watch 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 longines 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 watch and an unbreakable longines 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. Intended watch for professionals, TAG Heuer’s Specialists models reflect more than 140 longines years of expertise. The Pilot chronograph provides the essential calculations for navigation by land, sea and air. Cut from a single block of steel, water-resistant to 1000 meters, equipped with a screw-in crown and unidirectional turning bezel with large ratchet, the 1000 M is designed to withstand extreme depths. The Searacer chronograph, developed with professional sailors who include Chris Dickson and Pierre Fehlmann, offers totally new functions : the countdown ''Regatta'' (10, 6 or 5 minutes), the restart function and the 1/10th chronograph function. Stretching watch beyond one''s limits. The TAG Heuer image has always been closely associated with that of high-level competition.
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