Casio G-Shock GA-100-1A4ER | 200M Water Resistant, Stopwatch, Countdown Timer
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Casio G-Shock GA-100-1A4ER | 200M Water Resistant, Stopwatch, Countdown Timer
Unleash Unrivalled Toughness and Precision
Engineered for the adventurer and the urban explorer alike, this Casio G-Shock combines legendary durability with advanced timing features. Its robust 200M water resistance and intricate stopwatch capabilities make it the perfect companion for challenging environments and active lifestyles.
Specifications
| Model Number | GA-100-1A4ER |
| Case / Bezel Material | Resin |
| Stopwatch | 1/1000-second, measuring capacity 99:59'59.999'', Elapsed time, lap time, split time, Speed (0 to 1998 units / hour), Distance input (0.0 to 99.9), Mach indicator |
| 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), Auto-repeat |
| Timekeeping | Analog (2 hands: hour, minute (hand moves every 20 seconds), 1 dial: speed), Digital (Hour, minute, second, pm, month, date, day) |
| Accuracy | ±15 seconds per month |
| Approx. Battery Life | 2 years on CR1220 |
| Case Size | 55×51.2×16.9mm |
| Total Weight | 70g |
Key Features
- 200M water resistance for serious aquatic activities.
- High-precision 1/1000-second stopwatch with speed and distance input.
- Versatile countdown timer with auto-repeat function.
- Durable resin case and bezel for extreme resilience.
- Dual analog and digital timekeeping display.
- Long-lasting 2-year battery life.






