Casio G-Shock Gravitymaster Master of G Bluetooth Men's Watch GR-B300RY-1A9
Model: GR-B300RY-1A9
Case size (L× W× H) 59 × 54.7 × 15.7mm
Weight 71g
Bio-based Carbon / Bio-based resin / Stainless steel Case
Bio-based resin band
Shock Resistant
Carbon Core Guard structure
Water resistance 200m
Bluetooth Connects to a smartphone and automatically adjusts the time
Power supply and battery life
Tough Solar (Solar powered)
Mobile link (Wireless linking using Bluetooth®)
CASIO WATCHES Apps
App connectivity feature
Auto time adjustment
Easy watch setting
Approximately 300 world time cities
Flight log
Phone finder
Mineral Glass
Screw Lock Crown
Black ion plated bezel
Compatible band size 145 to 215mm
Neobrite
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 light (Super Illuminator)
Afterglow
White LED Color
Full auto-calendar (to year 2099)
Power Saving (hands stop to save power when the watch is left in the dark)
Battery display/alert
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)
±15 seconds per month (with no mobile link function)Accuracy
Date display
Day indicator
Regular timekeeping:
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Packaging: New in box with manual