Casio Standard Micro-light Black Watch F-91W-1DG

CASIO Watches Standard Micro-light Black Watch F-91W-1DG     Information: Case size (L× W× H) 38.2 × 35.2 × 8.5 mm Weight 21 g Case and bezel material Resin Band Resin Band Water resistance Water Resistant Power supply and battery life Approx. battery life: 7 years on CR2016   Exterior Glass Resin Glass   Watch Features Stopwatch 1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Net time, split time, 1st-2nd place times Alarm/hourly time signal Daily alarm Hourly time signal Light LED light Light color LED:Green 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