SEIKO PROSPEX SLA065/SBDX053 ASTROLABE SAVE THE OCEAN LIMITED EDITION GENT'S WATCH Specifications : Caliber Number : 8L35 Automatic with manual winding Precision : +15 to -10 seconds per day Power reserve : Approx. 50 hours 26 Jewels Stop second hand function Date display Case Material : Stainless steel (super hard coating) Case Thickness:13.1mm Case Diameter:41.3mm Lug-to-lug:47.6mm Dual-curved sapphire crystal Crystal Coating : Anti-reflective coating on inner surface LumiBrite LumiBrite on hands, index(es) and bezel Band Material : Silicone Bracelet Length : 210.0 Distance between lugs : 20 Water Resistance 200m / 660ft diver's Magnetic Resistance : 4,800 A/m Weight : 112.0 LIMITED EDITION on the case back Serial number engraved on the case back Unidirectional rotating bezel Screw-down crown Screw case back