Caliber Number 4R34 Automatic Movement with manual winding Power reserve Approx. 41 hours Jewels 24 24-hour hand (dual time display function) Stop seconds hand function Case/Band Case Material Stainless steel Case Size Thickness:13.6mm Diameter:39.4mm Lug-to-lug:47.9mm Crystal Curved Hardlex LumiBrite LumiBrite on hands and index(es) Water Resistance 10 bar Magnetic Resistance 4,800 A/m Weight 147g Three-fold clasp with secure lock See-through & Screw case back