This special edition commemorates Certina’s membership in the Sea Turtle Conservancy, which is devoted to the conservation of the sea turtle and its habitats. It was established in 1959, the same year Certina debuted its DS “Double Security” concept. Furthermore, the watch is conform to the ISO 6425 standard for diving watches by using special O-ring seals in the crown and case back. As a professional diver’s watch, it is water resistant to 300 metres, and has a screw-down crown, screw-down case back and a unidirectional bezel with Super-LumiNova coating markings for high readability. It contains the automatic ETA Powermatic 80 movement, noted for its remarkable 80-hour power reserve. The blue seconds hand is a reference to the Sea Turtle Conservancy, the official logo of which is featured on the case back.
316L satin-finished stainless steel, 43 mm. Bezel of black anodised aluminium, screw-down crown with initials DS. Sapphire crystal with double-sided anti-reflective coating. Screw-down case back with Sea Turtle Conservancy official logo. Water-resistant to 300 metres (30 bar/1000 ft)
Black surface finish with blue seconds hand and Super-LumiNova coating on indexes and hands. “Diver’s Watch 300 m” lettering in blue
Mechanical Automatic ETA Powermatic 80, 21,600 vib/h (3Hz), up to 80-hour power reserve
Hours, minutes, central seconds, date
Satin-finished three-part stainless steel bracelet. Folding buckle with twin push buttons and flexible diver extension