This dark grey Casio Standard Digital collection has many features among those are, 50-meter water resistance, 1/100-second stopwatch, Daily alarm, LED backlight. It also provide an approximate 7 years battery life. The hour format options are 12/24 hour and gives you an accuracy of ±30 seconds per month. Regular timekeeping: Hour, minute, second, pm, date, day. Number of Batteries: 1 Features: Water Resistant, Quick Ship Jewelry Closure: Buckle Power Source: Battery (included) Watch Movement: Quartz Water Resistance: 50m Band Color: Gray Dial Color: Gray Case Thickness: 10mm Case Width: 44mm Watch Band Length: 9 Inch Band Content: Resin Case Materials: 100% Resin Band Width: 25mm Care: Wipe Clean Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.