The Casio G-SHOCK GA-100-1A1HDR is a rugged analog-digital watch built around G-SHOCK’s signature toughness and a bold, dynamic face design. Its combination display features large lightweight aluminum hour and minute hands together with four LCD sections arranged symmetrically across the dial. The watch features shock-resistant and magnetic-resistant construction, a resin case and band, mineral glass, and 200-meter water resistance. Advanced functions include world time, a 1/1000-second stopwatch with speed measurement, a 24-hour countdown timer, five daily alarms, and an amber LED light with auto illumination. Powered by a CR1220 battery with approximately 2 years of battery life, the GA-100-1A1HDR is designed for sports, active lifestyles, and demanding everyday use.
Key Features
G-SHOCK analog-digital design
Shock Resistant
Magnetic Resistant
Resin case and bezel
Resin band
Mineral glass
200-meter / 20-bar water resistance
World time
1/1000-second stopwatch
Speed measurement
Distance input
Mach indicator
24-hour countdown timer with auto-repeat
5 daily alarms, including 1 snooze alarm
Hourly time signal
Amber LED light
Auto light switch
Full auto-calendar through 2099
12/24-hour time format
Accuracy of ±15 seconds per month
Approximately 2-year battery life
Compatible wrist size: 145–215 mm
Case & Bezel
Case and bezel material: Resin
Construction:
Shock Resistant
Magnetic Resistant
Glass: Mineral Glass
Large, rugged G-SHOCK construction
Dial & Display
Analog-digital combination display
Large aluminum hour and minute hands
Four LCD display sections
Symmetrical face layout
Analog Display
2 hands:
Hour
Minute
Minute hand moves every 20 seconds
1 dial for speed indication
Digital Display
Displays:
Hour
Minute
Second
PM indicator
Month
Date
Day
Band
Resin band
Compatible wrist size: 145–215 mm
Durable construction designed for active everyday use
