Monochromatic color scheme meets streamlined face design. A refined look, pure vintage sophistication. The slim case offers an even more comfortable fit. Case size (L× W× H) 37.4 × 35.5 × 6 mm Weight 50 g Case and bezel material Resin / Chrome plated Band Stainless Steel Band Adjustable Clasp Water resistance Water Resistant Power supply and battery life Approx. battery life: 3 years on CR1616 Glass Mineral Glass Compatible band size 150 to 205 mm Stopwatch 1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring modes: Split time, 1st-2nd place times Alarm/hourly time signal Daily alarm Hourly time signal Light LED backlight Light color LED:Amber Calendar Auto-calendar (set at 28 days for February) Accuracy Accuracy: ±30 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, date, day