Movement Caliber Number 6R35 Movement Type Automatic with manual winding Accuracy +25 to -15 seconds per day Duration Approx. 70 hours Exterior Case Material Stainless steel Crystal Sapphire crystal with magnifier Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands and index(es) Band Material Calfskin Clasp Three-fold clasp with push button release Other Details Water Resistance 20 bar Case Size Thickness: 13.2 ㎜ Diameter: 39.5 ㎜ Length: 46.4 ㎜ Weight 87.0 g Other Specifications Rotating compass inner ring Screw case back Screw-down crown See-through case back Other Features 24 jewels Date display Stop second hand function