Based on the successful analog/digtial GA100 X-large G series, G-Shock introduces an all digital version line-up. Black resin band digital watch with black face.G-Shock GD100-1B Details: Shock Resistant200M Water ResistantHigh-Intensity LEDLarge Digital Display Area200M Water ResistantShock ResistantAuto LED Backlight (Super Illuminator)Multi-time (4 different cities)World Time31 time zones (48 cities + UTC), city code display, daylight saving on/off5 Independent Alarms (one-time or daily)Hourly Time SignalFlash alertFlasher with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm, countdown timer progress beeper1/100 second stopwatchMeasuring capacity: 23:59'59.99"Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timerMeasuring unit: 1/10 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-second increments, 1-minute increments and 1-hour increments)Other: progress beeperFull Auto Calendar (pre-programmed until the year 2099)12/24 Hour FormatsButton operation tone on/offAccuracy: +/-15 seconds per monthBattery: CR2025Approx. battery life: 7 yearsCase diameter : 55mmThickness: 17.4mmLugs to lugs: 48.5mmTotal weight: 72g
