Movement Caliber Number 4R72 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 24 Functions Stop seconds hand function Case/Band Case Material Stainless steel Case Size Thickness:11.6mm Diameter:40.5mm Lug-to-lug:47.5mm Crystal Box-shaped Hardlex Band Material Calfskin Clasp Three-fold clasp with push button release Distance between lugs 20