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.
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Magnetic Resistant
JIS Class Level 1* magnetic resistance protects against the effects of magnetic fields. *Equivalent to ISO Standard 764
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LED Light (Auto Light)
A light-emitting diode is used for display illumination. The Auto Light feature illuminates the display when the watch is tilted towards the face
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World Time (R48)
Displays the current time in major cities and specific areas around the world. R: Current time in major cities around the world. Values indicate number of cities/areas
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Snooze Feature
Each time you stop the alarm, it sounds again after a few minutes
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Daily Alarm, Hourly Time Signal (5)
The daily alarm sounds each day at the time you set. The value indicates how many alarms are available. The hourly time signal causes the watch to beep every hour on the hour
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Stopwatch (1/1000 100HR)
Accurate measurement of elapsed time with the touch of a button. The fraction indicates the unit of measurement, while the time figure indicates the maximum time measurement
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Timer (REPEAT 24H)
Counts down from a start time specified by you. The value indicates the number of timers available, while the time figure indicates the maximum starting time. “REPEAT” indicates Auto Repeat, which automatically restarts timing at the end of each countdown
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Full Auto-Calendar
Allowances are made automatically for months of different lengths, including leap year
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12/24-Hour Timekeeping
Times can be displayed in either 12-hour or 24-hour format
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Shock Resistant
Shock-resistant construction protects against impact and vibration
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Water Resistant (20 BAR)
The “BAR” value indicates the number of atmospheres to which water resistance is ensured. 20 BAR means water resistance to 20 atmospheres. Watches marked “200m” have the same water resistance as 20 BAR watches
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Mineral Glass
Hard glass resists scratching
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Band
Resin
| Shock Resistant |
| Magnetic Resistant |
| 200 Meter Water Resistant |
| Auto LED Light with Afterglow |
| World Time 29 times zones (48 cities + UTC), daylight saving on/off, home city/world time swapping |
| 4 Daily Alarms and 1 Snooze Alarm |
| Hourly Time Signal |
| 1/1000 Second Stopwatch Measuring capacity: 99:59’59.999″ Measuring modes: Elapsed time, lap time, split time Others: 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) Other: Auto-repeat |
| Full Auto-Calendar (pre-programmed until the year 2099) |
| 12/24 Hour Formats |
| Accuracy: +/- 15 seconds per month |
| Battery: CR1220 |
| Dimensions: 55.0 x 51.2 x 16.9mm / 71g |
| Approx. battery life: 2 years |
| Module 5081 |
