Case size (L× W× H) 38.6 × 36.3 × 9.6 mm Weight 49 g Case and bezel material Case / bezel material: Resin / Black chrome plated Band Stainless Steel Band Adjustable Clasp Water resistance Water Resistant Power supply and battery life Approx. battery life: 7 years on CR2016 Stopwatch 1/100-second stopwatch Measuring capacity: 59’59.99″ Measuring modes: Elapsed time, split time, 1st-2nd place times Alarm/hourly time signal Daily alarm Hourly time signal Light Electro-luminescent backlight Light color EL:Blue Green Calendar Auto-calendar (28 days for February) Accuracy Accuracy: ±30 seconds per month Other features 12/24-hour format Regular timekeeping: Digital: Hour, minute, second, pm, date, day