Case size (L× W× H) 50.1 × 44.5 × 13.8 mm Weight 61 g Case and bezel material Carbon / Stainless steel / Aluminum Band Alcantara material band Water resistance 100-meter water resistance Power supply and battery life Solar powered Glass Sapphire crystal with anti-reflective coating Compatible band size 175 to 215 mm Stopwatch 1-second stopwatch Measuring capacity: 29'59 Measuring modes: Elapsed time, split time, 1st-2nd place times Battery display/alert Battery level indicator Low battery alert Run time Operating time from full charge until hands stop: Approx. 5 months Accuracy Accuracy: ±20 seconds per month Other features Regular timekeeping: Analog: 3 hands (hour, minute, second), 3 dials (24-hour, stopwatch minutes, stopwatch seconds) Date display