Stopwatch 1/10-second stopwatch Measuring capacity: 59'59.9'' Measuring mode: Elapsed time Alarm/hourly time signal Daily alarm Hourly time signal Light LED backlight LED:Amber Calendar Auto-calendar (28 days for February) Accuracy: ±30 seconds per month Regular timekeeping: Hour, minute, second, pm, month, date, day Resin Glass Case / bezel material: Resin / Chrome plated Stainless Steel Band Adjustable Clasp Water resistant Power supply and battery life Approx. battery life: 3 years on CR1616 Case size (L× W× H) 40.7 × 32.7 × 9.2 mm Weight 53 g