Casio G-Shock Master Of G Gravitymaster GR-B300-1AER Watch

The case has sizes of 59 × 54.7 × 15.7 mm. The case and strap are made from bio-based resin. It is shock resistant with Carbon Core Guard structure and has a water resistance of up to 200m (20ATM). This carbon core structure provides rigidity and shock resistance, also preventing corrosion. This is because the material is the same as that used in aircraft fuselages. Additionally, the carbon fiber reinforced case has a bezel design inspired by the new generation of aircraft.

The glass is mineral.

Smartphone Link Features:

• Automatic time setting
• Simple clock setting
• World time of approximately 300 cities
• Flight log
• phone finder

Watch functions:

• Dual time (home city time change)
• 1 second stopwatch
• Countdown timer
• Daily alarm
• Brightness with white LED light.
• Full automatic calendar (up to the year 2099)
• Energy saving function
• Battery level indicator
• Execution time
• Accuracy: ±15 seconds per month (without Mobile Link function)
• Date display
• Normal time display