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422 avenue Mont-Royal Est, Montreal, Quebec H2J 1W1

Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
Casio G-Shock  GRAVITYMASTER | GRB300-1A4
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  • Load image into Gallery viewer, Casio G-Shock  GRAVITYMASTER | GRB300-1A4
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  • Load image into Gallery viewer, Casio G-Shock  GRAVITYMASTER | GRB300-1A4
  • Load image into Gallery viewer, Casio G-Shock  GRAVITYMASTER | GRB300-1A4

Casio

G-Shock   
SKU: GRB300-1A4  •  Barcode: 889232373102
Casio G-Shock GRAVITYMASTER | GRB300-1A4
Casio G-Shock GRAVITYMASTER | GRB300-1A4
Regular price
$424.00
Sale price
$424.00
Regular price
$424.00
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Casio G-Shock  GRAVITYMASTER | GRB300-1A4

The sky’s 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-generation aircraft come together in a bold and powerful form. 

Envision the world through a pilot’s eyes with the flight log memory function for recording current location and time, as well as dual-time simultaneously displaying the time in two time zones. In addition, simply tap on the app to instantly switch between the time back home and local time — a practical function to make traveling abroad that much smoother.

Large, dimensional index marks and a metal bezel accentuating the large watch face exude functionality, enhancing the visibility that is so important for pilots, whose job demands intuitive reading of time.

The rotary disc indicator at the 9 o’clock position uses a dual-coil motor to ensure smooth rotation and functional beauty. The indicator not only rotates to display alarm on/off and stopwatch; it functions as a battery level indicator as well.

The high-contrast black and white color scheme dotted with color accents on the dial and buttons evokes the look of a cockpit instrument panel, while dark color variations express the practical functionality of an aviation worldview.

Key resin components used in the case, bezel, and band are made with bio-based resin, a material expected to help reduce environmental impact.

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Wrist sizing

SKUGRB300-1A4
Barcode889232373102
Reference Number Power supply and battery life: Tough Solar (Solar powered)
MovementTime adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time
Case Size 59 × 54.7 × 15.7 mm
Case Material Carbon / Bio-based resin
Crystal Mineral Glass
Water Resistance 200-meter / Shock Resistant
Type Of Strap Bio-based resin band
Manufacturer Warranty1 year