Seiko Mens Daywear 100M Specifications Movement Caliber Number 6N52 Movement Type Quartz Precision ±15 seconds per month Battery life Approx. 3 years Case/Band Case Material Titanium Case Size Thickness:8.4mm Diameter:40.2mm Lug-to-lug:47.0mm Crystal Sapphire crystal LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 20 Other Details Water Resistance 10 bar Weight 74.0