Seiko Prospex Sea 1968 Diver's Re-interpretation GMT Save the Ocean Watch SPB439J1

Caliber Number: 6R54 Movement Type: Automatic with manual winding Precision: +25 to -15 seconds per day Power reserve: Approx. 72 hours(3 days) Jewels: 24 24-hour hand (dual time display function) Stop second hand function Case Material: Stainless steel (Bezel: Stainless steel with ceramic display) Case Size Thickness:12.9mm Diameter:42.0mm Lug-to-lug:48.6mm Crystal: Sapphire crystal Crystal Coating: Anti-reflective coating on inner surface LumiBrite: LumiBrite on hands, index(es) and bezel Clasp: Three-fold clasp with secure lock , push button release with extender Distance between lugs: 20 Water Resistance: 200m / 660ft diver's Magnetic Resistance: 4,800 A/m Weight: 177.0g LIMITED EDITION on the case back (Limited to 1500 pieces) Serial number engraved on the case back Unidirectional rotating bezel Screw-down crown Three-fold clasp with secure lock Screw case back