SEIKO-Prospex Sea HBC001

Movement 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 Functions 24-hour hand (dual time display function) Stop second hand function Case/Band Case Material Stainless steel (Bezel: Stainless steel with ceramic display) Case Size Thickness:13.3mm 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, solid & slide adjuster Bracelet Length 200.0 Distance between lugs 20 Other Details Water Resistance 300m / 1000ft diver's Magnetic Resistance 4,800 A/m Features Unidirectional rotating bezel Screw-down crown Screw case back