Movement Caliber Number 4R36 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 24 Functions Case/Band Case SizeThickness :13.4mm Diameter : 42.5mm Lug-to-lug : 46.0mm Crystal Curved Hardlex LumiBrite LumiBrite on hands, index(es) and bezel Bracelet Length195.0 mm Distance between lugs 22mm Other Details Water Resistance10 bar Weight 94.0g Features See-through & Screw case back