G-Shock • GRB300-1A • Gravitymaster Watch Color:Black Accuracy: ±15 seconds per month

Accuracy: ±15 seconds per month (with no mobile link function)

indicating 200-meter and 100-meter water resistance

Case diameter in mm: 45

Caliber Number: 4R34

G-Shock • GRB300-1A • Gravitymaster Watch Color:Black Accuracy: ±15 seconds per monthThe skys the limit! Introducing the GRAVITYMASTER GRB300, a piece of aviation inspired professional gear designed to work even in the harshest environments, from the G SHOCK MASTER of G line. The GRB300 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