Caliber Number 6R35 Movement Type Automatic with manual winding capacity Accuracy +25 to -15 seconds per day Exterior Case Material Stainless steel Crystal Curved sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands and indexes Band Material Calfskin Clasp Three-fold clasp with push button release Other Details Water Resistance 20 bar Case Size Thickness: 12.9 ㎜ Diameter: 38 ㎜ Length: 46 ㎜ Weight 85.0 g Other Specifications Screw case back Screw-down crown See-through case back Other Features 24 jewels Date display Stop second hand function