Movement Caliber Number 6R35 Movement Type Automatic with manual winding Precision +25 to -15 seconds per day Power reserve Approx. 70 hours Jewels 24 Functions Stop second hand function Date display Case/Band Case Material Stainless steel (super hard coating) Case Size Thickness:12.5mm Diameter:42.0mm Lug-to-lug:48.8mm Crystal Sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite LumiBrite on hands, index(es) and bezel Clasp Three-fold clasp with secure lock , push button release with extender Distance between lugs 20