Casio G-Shock Master of G - Air Gravitymaster GR-B300-1AJF
The G-SHOCK GRAVITYMASTER Pilots Watch - Built for aviation lovers with a cutting-edge design delivering strength and functionality. Introducing the black version of the new models, complete with our bespoke Carbon Core Guard structure and utilising the same carbon material used in aircraft fuselages. This structure, combined with the seamless bezel design inspired by jet fighter aircraft, creates a look both cutting-edge and powerful. The B300 provides all the features you expect from a MASTER OF G timepiece including dual-time simultaneous two time zone display, solar powered by any light source, alarms and stopwatch. A built in pilots flight log memory function also records the current location, time, routes traveled, and more. A brilliant all rounder boasting a striking design with bold aviation nods. Dimensions: 59.0 x 54.7 x 15.7mm WATER RESISTANT: 200 Metres Water Resistant ALARM FUNCTION: Multi Function Alarm AUTO CALENDAR: Once set, the automatic calendar always displays the correct date BLUETOOTH CONNECTIVITY: Phone Finder: Pressing a button on the watch will emit an audible tone from your phone, even in silent mode., Flight Log Function, using waypoint memory, Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place and Phone finder using the CASIO CONNECTED APP CORE GUARD STRUCTURE: New Carbon Core Guard Structure COUNTDOWN TIMER FUNCTION: Countdown Range: 24 hours, Measuring Unit: 1 second DATE DISPLAY: The current date is displayed on the watch face DUAL TIME: Simultaneous display of the current time in two different time zones. DISPLAY ILLUMINATION: LED light MINERAL GLASS: Hard glass resists scratching NEOBRITE: A luminous coating on the watch hands provides illumination in the dark. SHOCK RESISTANT: Patented Hollow Core Guard Structure protects against impact and vibration SOLAR POWER: Powered by any light source, saving time and money as no battery change required- known as TOUGH SOLAR STOPWATCH FUNCTION: Measuring Capacity: 24 hours, Measuring Unit: 1/100th second WORLD TIME: Displays the current time in major cities and specific areas around the world
The G-SHOCK GRAVITYMASTER Pilots Watch - Built for aviation lovers with a cutting-edge design delivering strength and functionality. Introducing the black version of the new models, complete with our bespoke Carbon Core Guard structure and utilising the same carbon material used in aircraft fuselages. This structure, combined with the seamless bezel design inspired by jet fighter aircraft, creates a look both cutting-edge and powerful. The B300 provides all the features you expect from a MASTER OF G timepiece including dual-time simultaneous two time zone display, solar powered by any light source, alarms and stopwatch. A built in pilots flight log memory function also records the current location, time, routes traveled, and more. A brilliant all rounder boasting a striking design with bold aviation nods. Dimensions: 59.0 x 54.7 x 15.7mm WATER RESISTANT: 200 Metres Water Resistant ALARM FUNCTION: Multi Function Alarm AUTO CALENDAR: Once set, the automatic calendar always displays the correct date BLUETOOTH CONNECTIVITY: Phone Finder: Pressing a button on the watch will emit an audible tone from your phone, even in silent mode., Flight Log Function, using waypoint memory, Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place and Phone finder using the CASIO CONNECTED APP CORE GUARD STRUCTURE: New Carbon Core Guard Structure COUNTDOWN TIMER FUNCTION: Countdown Range: 24 hours, Measuring Unit: 1 second DATE DISPLAY: The current date is displayed on the watch face DUAL TIME: Simultaneous display of the current time in two different time zones. DISPLAY ILLUMINATION: LED light MINERAL GLASS: Hard glass resists scratching NEOBRITE: A luminous coating on the watch hands provides illumination in the dark. SHOCK RESISTANT: Patented Hollow Core Guard Structure protects against impact and vibration SOLAR POWER: Powered by any light source, saving time and money as no battery change required- known as TOUGH SOLAR STOPWATCH FUNCTION: Measuring Capacity: 24 hours, Measuring Unit: 1/100th second WORLD TIME: Displays the current time in major cities and specific areas around the world
The G-SHOCK GRAVITYMASTER Pilots Watch - Built for aviation lovers with a cutting-edge design delivering strength and functionality. Introducing the black version of the new models, complete with our bespoke Carbon Core Guard structure and utilising the same carbon material used in aircraft fuselages. This structure, combined with the seamless bezel design inspired by jet fighter aircraft, creates a look both cutting-edge and powerful. The B300 provides all the features you expect from a MASTER OF G timepiece including dual-time simultaneous two time zone display, solar powered by any light source, alarms and stopwatch. A built in pilots flight log memory function also records the current location, time, routes traveled, and more. A brilliant all rounder boasting a striking design with bold aviation nods. Dimensions: 59.0 x 54.7 x 15.7mm WATER RESISTANT: 200 Metres Water Resistant ALARM FUNCTION: Multi Function Alarm AUTO CALENDAR: Once set, the automatic calendar always displays the correct date BLUETOOTH CONNECTIVITY: Phone Finder: Pressing a button on the watch will emit an audible tone from your phone, even in silent mode., Flight Log Function, using waypoint memory, Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place and Phone finder using the CASIO CONNECTED APP CORE GUARD STRUCTURE: New Carbon Core Guard Structure COUNTDOWN TIMER FUNCTION: Countdown Range: 24 hours, Measuring Unit: 1 second DATE DISPLAY: The current date is displayed on the watch face DUAL TIME: Simultaneous display of the current time in two different time zones. DISPLAY ILLUMINATION: LED light MINERAL GLASS: Hard glass resists scratching NEOBRITE: A luminous coating on the watch hands provides illumination in the dark. SHOCK RESISTANT: Patented Hollow Core Guard Structure protects against impact and vibration SOLAR POWER: Powered by any light source, saving time and money as no battery change required- known as TOUGH SOLAR STOPWATCH FUNCTION: Measuring Capacity: 24 hours, Measuring Unit: 1/100th second WORLD TIME: Displays the current time in major cities and specific areas around the world
The G-SHOCK GRAVITYMASTER Pilots Watch - Built for aviation lovers with a cutting-edge design delivering strength and functionality. Introducing the black version of the new models, complete with our bespoke Carbon Core Guard structure and utilising the same carbon material used in aircraft fuselages. This structure, combined with the seamless bezel design inspired by jet fighter aircraft, creates a look both cutting-edge and powerful. The B300 provides all the features you expect from a MASTER OF G timepiece including dual-time simultaneous two time zone display, solar powered by any light source, alarms and stopwatch. A built in pilots flight log memory function also records the current location, time, routes traveled, and more. A brilliant all rounder boasting a striking design with bold aviation nods. Dimensions: 59.0 x 54.7 x 15.7mm WATER RESISTANT: 200 Metres Water Resistant ALARM FUNCTION: Multi Function Alarm AUTO CALENDAR: Once set, the automatic calendar always displays the correct date BLUETOOTH CONNECTIVITY: Phone Finder: Pressing a button on the watch will emit an audible tone from your phone, even in silent mode., Flight Log Function, using waypoint memory, Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place and Phone finder using the CASIO CONNECTED APP CORE GUARD STRUCTURE: New Carbon Core Guard Structure COUNTDOWN TIMER FUNCTION: Countdown Range: 24 hours, Measuring Unit: 1 second DATE DISPLAY: The current date is displayed on the watch face DUAL TIME: Simultaneous display of the current time in two different time zones. DISPLAY ILLUMINATION: LED light MINERAL GLASS: Hard glass resists scratching NEOBRITE: A luminous coating on the watch hands provides illumination in the dark. SHOCK RESISTANT: Patented Hollow Core Guard Structure protects against impact and vibration SOLAR POWER: Powered by any light source, saving time and money as no battery change required- known as TOUGH SOLAR STOPWATCH FUNCTION: Measuring Capacity: 24 hours, Measuring Unit: 1/100th second WORLD TIME: Displays the current time in major cities and specific areas around the world
in 35 offers
The lowest price for Casio G-Shock Master of G - Air Gravitymaster GR-B300-1AJF right now is $307.00 at eBay.com.au, compared across 15 retailers.
The all-time low was $307.00 on 10 June 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 13:11:57
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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 shiels.com.au
Lightweight, no frills, analogue watch.Looks great, sits great and got it on sale so very happy.Won't regret adding this to your collection!!
originally posted on houseofwatches.co.uk
Great product for the price, bomb proof unlike my more expensive watches, looks great on the wrist and has loads of features, won't be buying any more watches that scratch as soon as you look at them, will be buying gshock from now on.
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!
G-shock Gravity Master Black Resin Band Watch Grb300-1a4
Free delivery
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 Gravitymaster Bluetooth Gr-b300-1a 200m
Free delivery
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!
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Free delivery
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Casio G-shock Master Of G-air Gravitymaster Mobile Link Gr-b300-1a4
Free delivery
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!
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.
Lightweight, no frills, analogue watch.Looks great, sits great and got it on sale so very happy.Won't regret adding this to your collection!!
Great product for the price, bomb proof unlike my more expensive watches, looks great on the wrist and has loads of features, won't be buying any more watches that scratch as soon as you look at them, will be buying gshock from now on.
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.
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.
Ordered this watch as it looked great. I personally found the instructions so poor I couldn’t even set the date.I’m sure it will be great if you can get it set up.
Really nice release - crisp finishing and details for the price, very comfortable on wrist, and wears a little smaller than the size suggests. Works well with the app. Only real gripe is the wheel power meter makes no sense, and it doesn't have hourly beep.
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.
Excellent service from this company & over £60 cheaper than other retailers selling the same G shock. Would highly recommend Francis & Gayle. This is the second quality G shock I have purchased from them. 👍
