Redefine Toughness: Introducing the Casio G-Shock GA-100-1A4.
Experience the dynamic fusion of ultimate durability and an energetic aesthetic with the Casio G-Shock GA-100-1A4. Its robust construction provides unwavering shock and magnetic resistance, alongside a 200-meter water resistance rating, making it ideal for the most demanding activities. The deep black case and band are perfectly complemented by the bold red accents on the detailed dial, offering a commanding presence on your wrist. From extreme sports to daily wear, the GA-100-1A4 is engineered to perform and designed to impress.
Case size (L× W× H): 55 × 51.2 × 16.9 mm
Weight: 70 g
Case and bezel material: Resin
Band: Resin Band
Construction: Shock Resistant / Magnetic Resistant
Water resistance: 200-meter water resistance
Power supply and battery life: Approx. battery life: 2 years on CR1220
Glass: Mineral Glass
World time: 29 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping
Stopwatch: 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
Alarm/hourly time signal
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Light: LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Light color: Amber
Calendar: Full auto-calendar (to year 2099)
Accuracy: ±15 seconds per month
12/24-hour format
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed)
Digital: Hour, minute, second, pm, month, date, day
| Made with ❤ by Solid Project