Casio G-Shock Master of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A4 Men's Watch
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.
in 33 offers
The lowest price for Casio G-Shock Master of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A4 Men's Watch right now is $326.26 at Jomashop, compared across 18 retailers.
The all-time low was $195.00 on 26 Apr 2026 — today's price is 67% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 16:21:29
Casio G-Shock Gravitymaster Alarm World Time Black Dial Men's Watch GA1100-1A1
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Casio G-Shock Master Of G - Air Alarm World Time Black Dial Watch GR-B300-1A, Resin Strap, 59 x 54.7 mm Case in Black
Delivery $28.42
Casio G-Shock Master Of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A4 200M Men's Watch
Free delivery
Casio G-Shock Master Of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A 200M Men's Watch
Free delivery
Casio G-Shock Master Of G-Air Gravitymaster Analog Smartphone Link Black Dial Solar GR-B300EC-1A 200M Men's Watch
Free delivery
Casio G-Shock GRB300-1A4
Delivery $144
Casio G-Shock GR-B300-8A2JF Black
Delivery $34
Casio G-Shock GR-B300-8A2JF
Delivery $36
Casio G-Shock GR-B300-8A2JF
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Casio G-Shock Master Of G-Air GR-B300EC-1A Men's Watch
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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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Casio G-Shock Gravitymaster Alarm World Time Black Dial Men's Watch GA1100-1A1
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Casio G-Shock Master Of G - Air Alarm World Time Black Dial Watch GR-B300-1A, Resin Strap, 59 x 54.7 mm Case in Black
Delivery $28.42
Casio G-Shock Master Of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A4 200M Men's Watch
Free delivery
Casio G-Shock Master Of G-Air Gravitymaster Smartphone Link Analog Tough Solar GR-B300-1A 200M Men's Watch
Free delivery
Casio G-Shock Master Of G-Air Gravitymaster Analog Smartphone Link Black Dial Solar GR-B300EC-1A 200M Men's Watch
Free delivery
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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