The Casio G-SHOCK GD-100-1BDR is a rugged digital watch that combines classic G-SHOCK black styling with distinctive red accents and a large, sporty design. Built with a shock-resistant resin case and bezel, resin band, mineral glass, and 200-meter water resistance, it is engineered for demanding everyday and active use. A high-brightness white LED backlight with a light guide plate provides excellent readability in dark conditions. Practical digital functions include Multi Time for four cities, world time across 31 time zones, a 1/100-second stopwatch, 24-hour countdown timer, five alarms, hourly time signal, and flash alert. Powered by a CR2025 battery with approximately 7 years of battery life, the GD-100-1BDR delivers dependable G-SHOCK toughness with versatile digital functionality.
Key Features
G-SHOCK digital design
Classic black styling with red accents
Shock Resistant
Resin case and bezel
Resin band
Mineral glass
200-meter / 20-bar water resistance
Multi Time for 4 different cities
World time across 31 time zones
1/100-second stopwatch
24-hour countdown timer
5 alarms
Hourly time signal
Flash alert
High-brightness white LED backlight
Auto light switch
Full auto-calendar through 2099
Button operation tone on/off
12/24-hour time format
Accuracy of ±15 seconds per month
Approximately 7-year battery life
Case & Bezel
Case and bezel material: Resin
Construction: Shock Resistant
Glass: Mineral Glass
Large, rugged G-SHOCK construction
Dial & Display
Digital display
Regular timekeeping displays:
Hour
Minute
Second
PM indicator
Month
Date
Day
12/24-hour time format
Full auto-calendar through 2099
Band
Resin band
Durable construction designed for active everyday use
