GR-B300-1A4DR
Unleash the power of toughness with the Casio G-SHOCK GR-B300-1A4 Master of G watch. Featuring carbon core guard technology, this timepiece is engineered to withstand extreme conditions, offering superior shock resistance and 200m water resistance. Whether you're on land, in water, or facing the elements, this watch is built to perform.
Powered by solar energy and equipped with Bluetooth connectivity, the GR-B300-1A4 syncs seamlessly with your smartphone, allowing automatic time adjustments and world time across 300 cities. With its high-contrast black dial and bold orange accents, it’s designed for those who value both function and style. The flight log memory function is perfect for aviation enthusiasts, allowing you to store key flight data. Durable, stylish, and packed with features, this G-SHOCK is your ultimate companion for adventure and exploration.
Case / bezel material: Carbon / Bio-based resin
Mineral Glass
Shock Resistant
Mineral Glass
Carbon Core Guard structure
200-meter water resistance
Bluetooth: Connects to a smartphone and automatically adjusts the time
Tough Solar (Solar powered)
Smartphone Link feature
Mobile link (Wireless linking using Bluetooth®)
Apps: CASIO WATCHES
Auto time adjustment
Easy watch setting
Approximately 300 world time cities
Flight log
Phone finder
World time
Dual time (Home City time swapping)
1-second stopwatch
Measuring capacity: 23:59'59.
Measuring modes: Elapsed time, split time
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)
Alarm/hourly time signal
Daily alarm
LED: White
Full auto-calendar (to year 2099)
Energy saving feature
Power Saving (hands stop to save power when the watch is left in the dark)
Battery display/alert
Battery level indicator
Run time
Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Accuracy: ±15 seconds per month (with no mobile link function)
Other features
Date display
Day indicator
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Size of Case: 59 × 54.7 × 15.7 mm
Total Weight: 71g
