Casio GA-100-1A1

Unleash the ultimate in rugged utility with the Casio G-SHOCK GA-100-1A1, a legendary "Extra Large" combination model that has become a global best-seller for its iconic "three-eye" design. This all-black, matte-finished powerhouse is engineered for those who demand absolute toughness, whether for tactical use, extreme sports, or high-intensity work environments.

The Casio GA-100-1A1 stands out with its symmetrical face featuring four large LCDs and lightweight aluminum hands that offer superior shock resistance. Beyond its rugged exterior, it is a high-precision instrument equipped with a millisecond stopwatch and a built-in speedometer to calculate velocity over a set distance.

Key Features

• Legendary Toughness: Built with G-SHOCK's signature Shock Resistant construction and JIS Class-1 Magnetic Resistance to ensure the movement stays accurate in any environment.
• 200-Meter Water Resistance: Ready for the deep, this watch is suitable for professional marine activities, skin diving, and high-impact water sports.
• 1/1000-Second Stopwatch: An incredibly precise chronograph that tracks elapsed time, lap times, and split times with extreme accuracy.
• Speed Indicator: Input a distance and use the stopwatch to calculate your speed in units per hour—it even features a Mach indicator for speeds exceeding 1225 units/hour.
• Auto LED Light: Includes an amber LED with an Auto Light Switch that illuminates the face automatically when you tilt your wrist toward your eyes.
• Global Connectivity: Features World Time for 29 time zones and 48 cities, with easy home city/world time swapping for international travel.
• Comprehensive Alarms: Stay on track with 5 daily alarms (including one snooze alarm) and an hourly time signal.

Specifications at a Glance

• Case Size: 55 × 51.2 × 16.9 mm (Bold, oversized presence)
• Weight: 70 g
• Battery Life: Approx. 2 years on CR1220
• Accuracy: Around 15 seconds per month
• Glass: Tough, scratch-resistant Mineral Glass