A timepiece for Aviation lovers with cutting edge design which delivers functionality. This new designed Gravity Master GR-B300 is made out of bio based resin which is used in the case, bezel and band. This watch also features a carbon core guard case, therefore much lighter than previous models, but still delivers on strength.
A timepiece for Aviation lovers with cutting edge design which delivers functionality. This new designed Gravity Master GR-B300 is made out of bio based resin which is used in the case, bezel and band. This watch also features a carbon core guard case, therefore much lighter than previous models, but still delivers on strength.
in 3 offers
The lowest price for Casio G-Shock Gravitymaster Gr-b300-1a4er Watch right now is $342.00 at Chrono24.com.au, compared across 3 retailers.
The all-time low was $257.50 on 22 Jan 2026 — today's price is 33% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 23 June 2026.
Casio G-Shock Gravitymaster Gr-b300-1a4er Watch
A timepiece for Aviation lovers with cutting edge design which delivers functionality. This new designed Gravity Master GR-B300 is made out of bio based resin which is used in the case, bezel and band. This watch also features a carbon core guard case, therefore much lighter than previous models, but still delivers on strength.
A timepiece for Aviation lovers with cutting edge design which delivers functionality. This new designed Gravity Master GR-B300 is made out of bio based resin which is used in the case, bezel and band. This watch also features a carbon core guard case, therefore much lighter than previous models, but still delivers on strength.
Last updated at 23/06/2026 20:02:54
Casio G-Shock GR-B300-1A4JF
Delivery $90
Casio G-shock Gr-b300-1a4er Watch Brown
Delivery $19.99
Casio G-shock Gr-b300-1a4er Man Quartz Watch
Free delivery
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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.
| Bracelet / Strap | Rubber/Silicone/PU |
| Glass | Mineral |
| Movement | Solar power |
| Water Resistance | 20 ATM (200m) |
Casio G-Shock GR-B300-1A4JF
Delivery $90
Casio G-shock Gr-b300-1a4er Watch Brown
Delivery $19.99
Casio G-shock Gr-b300-1a4er Man Quartz Watch
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.
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.
| Bracelet / Strap | Rubber/Silicone/PU |
| Glass | Mineral |
| Movement | Solar power |
| Water Resistance | 20 ATM (200m) |
