The Ultimate Instrument for All Altitudes: Favre-Leuba Raider Bivouac 9000

In 2017, the second oldest Swiss watch brand, Favre-Leuba, celebrates its 280th anniversary with a groundbreaking watch. The Raider Bivouac 9000 is the first mechanical wristwatch capable of measuring altitudes of up to an incredible 9,000 meters above sea level.

The 48-mm titanium case houses an aneroid barometer, which allows the watch to indicate the elevation at a given point by reacting to the changing air pressure surrounding it. Drawing and learning from its own past, when Favre-Leuba was renowned for pushing boundaries and challenging frontiers, the brand continues the vision of its forefathers with the new model while paying homage to the namesake model from 1962. The iconic watch, which is today a collector’s piece, was worn by mountaineers, parachutists and adventurers and recognized for being the very first mechanical wristwatch capable of measuring altitudes of up to 3,000 meters. Inspired from its forefathers and using the same reliable technology, the engineers at Favre-Leuba have now made a tool capable of going three times higher. A difference in air pressure of just 0.7 bar, which indicates a change in altitude of 9,000 m, can be measured precisely by the specially engineered capsule housed in the Bivouac 9000.

The central red altimeter hand indicates altitude gain in 50-meter steps and goes up to 3,000 meters in one rotation; upon completing three such rotations, the subdial at 3 o’clock indicates the climb up to 9,000 meters. On this same subdial, one can also observe the air pressure change. With this feature, not only does the user know how high he is above sea level, but also knows of any impending changes in the weather. An increase in air pressure known to result in improved weather can be observed when the central red hand turns counterclockwise, while colder air resulting from lower air pressure, thereby expanding the capsule, is indicated by the hand turning clockwise. This reliable feature helps an explorer decide whether to head out into the great outdoors or to take shelter. The precise calculation and design of the fine membrane allows the watch to also be water-resistant up to 30 meters.

Please visit Favre-Leuba’s official website for more information.

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