Clean lines and high style are the norm with G-Shock's GA100MMC-1A watch. 200M water resistant. Magnetic resistant protection. Auto LED lighting with afterglow. World time. 29 time zones (48 cities + UTC). City code display, daylight saving on/off. 5 daily alarms (4 one-time alarms and 1 snooze alarm). Hourly time signal. 1/1000 second stopwatch. Measuring capacity: 99:59'59.999 Other measurement codes: Speed (0-1998 units/hour) Selection distance input (0.0-99.9) Countdown Timer:· Measuring Unit: 1 second· Countdown Range: 24 hours· Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 12/24 hour formats. Button tone on/off. Accuracy: +/- 15 seconds per month. Size of case 55.0 x 51.2 x 16.9 mm.