The G-Shock GGB100-1A3 is part of the Mudmaster series, designed for rugged environments.

• Mudmaster series
• Carbon and resin construction
• Resin band
• Mineral and spherical glass
• Shock and mud resistant
• Carbon core guard structure
• 200-meter water resistance
• Bluetooth connectivity
• Step count using a 3-axis acceleration sensor
• Power saving function
• 38 time zones
• Sunrise and sunset time display
• 1/100-second stopwatch
• Countdown timer
• 5 daily alarms
• Hourly time signal
• Double LED light
• Full auto-calendar (to year 2099)
• Button operation tone on/off
• Accuracy: ±15 seconds per month
• 12/24-hour format
• Hand shift feature
• Dimensions: 55.4 x 51.3 x 19.4 mm