

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.
Case Size (LxWxH): 59 x 54.7 x 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: Radio-controlled Watch; Multi band 6
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power Supply and Battery Life: Tough Solar (Solar powered)
Movement: Solar
FREE SHIPPING: ON ALL ORDERS OVER $500
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Thank you for taking care of my watch and getting it serviced as it’s like brand new now!
I want to sincerely thank Moe Safa and his talented jewelers for their craftsmanship in creating the brooch, cufflinks, and studs for my award ceremony tuxedo ensemble. The platinum 950, diamonds, and onyx jewelry are truly impressive and made me feel special for the occasion. I highly recommend Safa Jewelers for any custom pieces you may need.
Mo has been exceptional from the beginning. Shout out to the staff as well. They had the exact ring that I wanted and they’re very fast in making custom rings. I recommend this place to others. Thanks Mo!!
Absolutely love love the service and great prices and I got a nice new watch I love my new Longines legend driver thank you Mo and the guys at Safa Jewelers
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