Movement Caliber Number 6R64 Movement Type Automatic with manual winding Accuracy +25 to -15 seconds per day Duration Approx. 45 hours Exterior Case Material Stainless steel (super hard coating) Crystal Sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite LumiBrite on hands and index(es) Clasp Three-fold clasp with push button release Other Details Water Resistance 10 bar Case Size Thickness: 13.7 ㎜ Diameter: 42.2 ㎜ Length: 49.2 ㎜ Other specifications Screw case back See-through case back Other features 24-hour hand 29 jewels Calendar-linked time difference adjustment function Date hand Power reserve indicator Stop second hand function Warranty : 3-years International