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. 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.
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. 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.
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. 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.
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. 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.
Last updated at 07/23/2026 16:58:34
G-Shock Gravity Master Black Resin Band Watch GRB300-1A4
Free delivery between 28 July – 5 Aug
Casio G-Shock GR-B300-1A4JF
Delivery $90
Casio G-Shock GRB300-1A4
Delivery $145
Casio G-Shock GR-B300-1A4JF
Delivery $448
Casio G-Shock GR-B300-1A4JF Black 54.7mm
Delivery $36
Casio G-Shock GR-B300-1A4JF Black 54.7mm
Delivery $43
Casio G-Shock GR-B300-1A4JF
Delivery $43
Casio G-Shock GR-B300-1A4JF Black 59x54.7mm
Delivery $43
Casio G-Shock GR-B300-1A4JF Black 59x54.7mm
Delivery $36
Casio G-Shock Gravity Master Watch GRB300-1A4 Resin Water Resistant - Black
Free delivery
originally posted on wallaceallan.co.uk
Good value. Chunky robust design.Easy to set time via app...not so on the watch itself.Would buy again .Very quick delivery at no cost.
originally posted on ebay.com
Awesome watch. Its a Casio G-Shock. A variety of styles for different tastes. This was a good balance for me, a Gravity Master for a reasonable price.
originally posted on casio.com
This timepiece does everything I need it to do. In a great package, case and weight. I travel, and need to keep time, track my location, and cover multiple time zones to check in at HQ.
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G-Shock Gravity Master Black Resin Band Watch GRB300-1A4
Free delivery between 28 July – 5 Aug
Casio G-Shock GR-B300-1A4JF
Delivery $90
Casio G-Shock GRB300-1A4
Delivery $145
Casio G-Shock GR-B300-1A4JF
Delivery $448
Casio G-Shock GR-B300-1A4JF Black 54.7mm
Delivery $36
Good value. Chunky robust design.Easy to set time via app...not so on the watch itself.Would buy again .Very quick delivery at no cost.
Awesome watch. Its a Casio G-Shock. A variety of styles for different tastes. This was a good balance for me, a Gravity Master for a reasonable price.
This timepiece does everything I need it to do. In a great package, case and weight. I travel, and need to keep time, track my location, and cover multiple time zones to check in at HQ.
Fabulous watch idf you talk about design , material, or built quality. No regret purchasing it. Amazing addition to the collection.
Nice lightweight analogue watch.Sits really well on the wrist and is super comfortable.Doesn't have all the bells and whistles but for me still really nice to look at.
Nice watch. Like the orange accents. It's a bit of a pain to keep connection after it's been off for awhile. I do like the watch.
Love the look and the features. Pretty straight forward design. The only thing I think may become an issue is the plastic clasp on the watch band. Feels very thin. No options to replace the band available yet. Hopefully soon. A silicon band with a metal clasp would be ideal
Fantastic watch for the price, have several watches costing much more, but won't be buying any more without checking gshock watches. Looks great on the wrist and can't get over all the functions. Great product casio, if you shop around you can get it 50 quid cheaper.
Happy with the look and fit. The instructions lack! Nothing on hie to adjust the date or if there is even a function…instructions lack info on all functions of the watch…..
A beautiful G-Shock with supreme Read-ability and useful functions. The Tough Solar sold it for me as I always look out for G-Shocks powered by light. A great watch all in all and looks great. The hands are some of the best looking on an analogue. Love it. Thanks.
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