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|Dial window material type||Mineral|
|Case diameter||5.1 centimetres|
|Case Thickness||16.9 millimetres|
|Band width||28 millimetres|
|Special features||Alarm, Calendar, Countdown|
|Water Pressure Resistance||200 metres|
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G-Shock's most popular large case analog/digital series introduces a matte black watch, the GA100MB-1A. The face and band are matte black with green accents which highlight the toughness and coolness of G-Shock. Mineral Glass Magnetic Resistant Shock Resistant 200-meter water resistance Case / bezel material: Resin Resin Band LED light Auto light switch, selectable illumination duration, afterglow World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city / World time city swapping 1/1000-second stopwatch Measuring capacity: 99:59'59.999'' Measuring modes: Elapsed time, lap time, split time Others: Speed (0 to 1998 units / hour), Distance input (0.0 to 99.9) Mach indicator (speed exceeding 1225 units / hour) 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) Other: Auto-repeat 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month Approx. battery life: 2 years on CR1220 Size of case: 55 × 51.2 × 16.9 mm Total weight: 72 g LED:Amber
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Most helpful customer reviews on Amazon.com
Amazon.com: 4 reviews
Not good25 October 2018 - Published on Amazon.com
👎👎👎 not worst this money!
he loved the1 February 2018 - Published on Amazon.com
My son in Air Force, he loved the watch
Excellent watch31 October 2018 - Published on Amazon.com
Excellent service. Excellent watch.
Awesome G-Shock watch8 July 2017 - Published on Amazon.com
Awesome G-Shock watch, however seller's description on model number shows it as Japan import, but the watch I received was not. Essentially it is the same watch but it was kind of a downer. With that aside, it is a great watch.