The Big Crown ProPilot Altimeter was introduced at Baselworld 2014. The ProPilot features an altimeter which indicates the altitude in meters. One of the special features is that it is able to show the change in altitude in more or less real time. The watch measures the air pressure through an aneroid capsule system and based on that, decides the altitude. It features an integrated Swiss mechanical barometric altimeter and barometer movement (developed with the specialist Thommen).Reference 01 733 7705 4264-Set5 23 16GFC is a limited edition of 1414 pieces created in honor of Rega, Switzerland’s air rescue service. It features a stainless steel case with grey PVD coating, while the dial features the Rega logo. It is also available in a version with the altimeter scale in feet.
