Specifications Movement Caliber Number 4R34 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 24 Functions 24-hour hand Stop second hand function Case/Band Case Material Stainless steel Case Size Thickness:13.6mm Diameter:42.5mm Lug-to-lug:46.0mm Crystal Hardlex with lenses LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 22mm Other Details Water Resistance 10 bar Weight 161.0g Features Rotating bezel Three-fold clasp with secure lock See-through & Screw case back