Movement: Caliber Number 6R35 Movement Type Automatic with manual winding Precision +25 to -15 seconds per day Power reserve Approx. 70 hours Jewels 24 Functions Stop second hand function Date display Case/Band Case Material Stainless steel Case Size Thickness:12.9mm Diameter:38.0mm Lug-to-lug:46.2mm Crystal Curved sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 19mm Other Details; Water Resistance 20 bar Features: See-through case back Screw case back Screw-down crown Screw case back *This item is BRAND NEW and will come with the original box and papers. We are authorized SEIKO dealers, which means you will receive the manufacturer's warranty with your purchase.