CASIO G SHOCK GLS 100 7

Model: GLS-100-7DRMineral GlassShock Resistant200-meter water resistanceCase / bezel material: ResinLeather BandLED backlight (Super Illuminator)Auto light switch, selectable illumination duration, afterglowFlash alertFlashes with buzzer that sounds for alarms, hourly time signal, countdown timer　progress beeper, and stopwatch auto startLow temperature resistant (-20°C/-4°F)World time29 time zones (48 cities), city code display, daylight saving on/off1/100-second stopwatch (ST1)Measuring capacity: 999:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place timesOther: Auto-start1/100-second stopwatch (ST2)Measuring capacity: 999:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments　and 1-hour increments)Others: Auto-repeat, progress beeper5 multi-function alarms (with 1 snooze alarm)Hourly time signalFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping: Hour, minute, second, pm, month, date, dayAccuracy: ±15 seconds per monthApprox. battery life: 3 years on CR2025Size of case/total weight: 55 X 51.2 X 17.4 mm/72.6 gLED:White