A spirit of adventure, with the Aquaracer Professional 200 and Aquaracer Professional 300. That story began in 1978 when Jack Heuer introduced the Heuer Reference 844. Designed for men and women who loved outdoor sports and exploration in nature – on land or in the water – the watch defined a new high-performance category of versatile wristwatches that could be relied on in extreme conditions. The Aquaracer name was added in 2004 and continued the legacy of the family's six design codes: a uni-directional rotating bezel; a screw-down crown; water resistance to at least 200 meters; luminous markings; a sapphire crystal; and a double safety clasp.