DESCRIPTION This specific design is inspired by Seiko’s 1970 Diver’s 150m watch – worn by Japanese explorer Naomi Uemura from 1974 to 1976 during his solo dog sled from Greenland to Alaska, a journey of 12,500km. This ‘Save the Ocean Special Edition,’ inspired by the ice of the North Pole, expresses the accumulation of time – linking the Antarctic history of Seiko diver’s watches with the time it takes for a glacier to form into its beautiful structure. The dial pattern and colour express the natural formations and pressure the glacier underwent during its long cooling period. Glaciers formed during the ice age, approximately 150 to 3 million years ago. Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ These timepieces are designed to be practical, reliable and durable within extreme or everyday environments, for experts, sports lovers and adventure seekers alike. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards. Seiko donates proceeds from Save The Ocean models to sea conservation organisations. Specifications Movement Caliber Number: 6R35Movement Type: Automatic with manual windingAccuracy: +25 to -15 seconds per dayDuration: Approx. 70 hours Exterior Case Material: Stainless steel (super hard coating)Crystal: Curved sapphire crystalCrystal Coating: Anti-reflective coating on inner surfaceLumiBrite: LumiBrite on hands, index(es) and bezelClasp: Three-fold clasp with secure lock , push button release with extender Other Details Water Resistance: 200m / 660ft diver's Case Size Thickness: 13.2mmDiameter: 42.7mmLength: 46.6mm Weight: 180.0g Other Specifications Screw case back Screw-down crown SPECIAL EDITION on the case back Three-fold clasp with secure lock Unidirectional rotating bezel Other Features 24 jewels Date display Stop second hand function