Get down and dirty with the Mudman G-Shock watch. Shock and mud resistant with sealed case and buttons that prevent dirt and dust damage. 12/24 hour formats and auto dual EL backlights with Afterglow. Low temperature resistance of -10 C/14 F. Great travel piece with 29 time zones in 48 cities with city code display and daylight saving option. Accuracy +/-15 seconds per month. 4 daily alarms with 1 snooze alarm. Countdown timer with 1 second measuring unit and 24 hour range with auto repeat and progress beeper. 1/100 second stopwatch (ST1) with measuring capacity of 999:59'59.99" with modes for elapsed time, split time and 1st , 2nd place times and auto start function. 1/100 second stopwatch (ST2) with measuring capacity of 999:59'59.99" with modes for elapsed time, split time and 1st , 2nd place times. Hourly time signal and auto calendar pre-programmed up to 2099. Battery CR2025 with approximately 3 year life span, Module 3031. Dimensions:Face Width 27.86mmFace Height 27.86mmFace Depth 14.55mmBand Width 20.53mmBand Circumference 8 inches