Casio G-Shock Master Of G Gravitymaster Solar Carbon Resin Watch GR-B300-1A

The sky’s the limit! Introducing the GRAVITYMASTER GR-B300, a piece of aviation-inspired professional gear designed to work even in the harshest environments, from the G-SHOCK MASTER of G line.

The GR-B300 features a Carbon Core Guard structure, which delivers the shock-resistance, rigidity, and corrosion-resistance of carbon material used in aircraft fuselages. The carbon fiber-reinforced resin case and the seamless bezel design inspired by next-generation aircraft come together in a bold and powerful form. 

Case size (L× W× H)

59 × 54.7 × 15.7 mm

Weight

71 g

Case and bezel material

Carbon / Bio-based resin

Band

Bio-based resin band

Construction

Shock Resistant

Carbon Core Guard structure

Water resistance

200-meter water resistance

Time adjustment

Bluetooth: Connects to a smartphone and automatically adjusts the time

Power supply and battery life

Tough Solar (Solar powered)