Oris Big Crown ProPilot Altimeter
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subir fotos a internetThe altimeter of the Oris Big Crown ProPilot Altimeter is activated by unscrewing the crown into 'Position 1', indicated by a red ring. Once set, the watch shows the current altitude via a yellow indicator, and the corresponding air pressure via a red indicator. When the crown is pulled out into 'Position 2', the altimeter can be calibrated. Once set, the watch shows the current altitude via the yellow indicator, and the corresponding air pressure via the red indicator. The altitude scale is around the outer dial ring; it can measure altitude up to 15,000 feet or 4,500 meters (two models have been produced, one with a scale in feet, one in metres). The air pressure scale is recessed between the altimeter scale and the central dial. Once the altimeter is no longer required, the crown can be returned to Position 0 by screwing it down.
The case, in stainless steel, measures 47mm. It has an AR-coated sapphire crystal and it is water resistant to 100 meters. It has screw-in stainless steel crowns, with a patented Oris altimeter adjustment and venting crown (PTFE vapour barrier).
Movement is the Swiss automatic Oris caliber 733 (base Sellita SW200) with 26 jewels, 28,800 vph and a power reserve of 38 hours. It features an integrated Swiss mechanical barometric altimeter and barometer movement.
