Certina DS Action Diver Sea Turtle Conservancy

Launched in 1959, the DS concept (Double Safety) uses special O-ring gaskets between the crown and the case back to comply with ISO 6425 for professional diving watches. This special version is water resistant up to 300 m with a screwdown crown and case and a unidirectional bezel with hands coated in Super-LumiNova. The watch includes the automatic Powermatic 80 ETA movement, famous for its eighty-hour power reserve.