1 year official warranty Kinetic Direct Drive Cal. 5D88 Silver Stainless Steel Case Silver Stainless Steel Bracelet Sapphire Crystal Glass Dark Blue Textured Dial Color Screw Down Case Back Moon Phase Function Display Function of Electric Power Generation Overcharge Prevention Function Power Reserve Display up to 1 Month Accuracy: +/-15 seconds per month (at temperatures between 5C and 35C) Diameter Approximately 42.5 mm without Crown Thickness Approximately 12 mm Lug Size 20 mm Three-fold Clasp with Push Button Release Water Resistant 100 M