With a history dating back to 1946, Japanese brand Casio is today one of the world's largest brands in watches, calculators, and cash registers. The technology behind the calculator forms the foundation for the watches, which were introduced in the 1980s. The well-known design with digital time display is for many people a symbol of the style of the 80s and 90s. Today, Casio is still one of the best-selling watch brands in the world, and many of the well-known vintage designs continue to be the most sought-after models. In addition to the classic models, the G-Shock collection, with the highest level of technology and robustness in the watch world, represents the image of modern-day Casio.
With a history dating back to 1946, Japanese brand Casio is today one of the world's largest brands in watches, calculators, and cash registers. The technology behind the calculator forms the foundation for the watches, which were introduced in the 1980s. The well-known design with digital time display is for many people a symbol of the style of the 80s and 90s. Today, Casio is still one of the best-selling watch brands in the world, and many of the well-known vintage designs continue to be the most sought-after models. In addition to the classic models, the G-Shock collection, with the highest level of technology and robustness in the watch world, represents the image of modern-day Casio.
There are no live offers for Casio G-Shock Gravitymaster Gr-b300ec-1aer Watch right now. The all-time low we recorded was $242.00 on 17 Aug 2026. Set a price alert to hear when it's back in stock.
Prices last updated 2 Sept 2026.
Casio G-Shock Gravitymaster Gr-b300ec-1aer Watch
With a history dating back to 1946, Japanese brand Casio is today one of the world's largest brands in watches, calculators, and cash registers. The technology behind the calculator forms the foundation for the watches, which were introduced in the 1980s. The well-known design with digital time display is for many people a symbol of the style of the 80s and 90s. Today, Casio is still one of the best-selling watch brands in the world, and many of the well-known vintage designs continue to be the most sought-after models. In addition to the classic models, the G-Shock collection, with the highest level of technology and robustness in the watch world, represents the image of modern-day Casio.
With a history dating back to 1946, Japanese brand Casio is today one of the world's largest brands in watches, calculators, and cash registers. The technology behind the calculator forms the foundation for the watches, which were introduced in the 1980s. The well-known design with digital time display is for many people a symbol of the style of the 80s and 90s. Today, Casio is still one of the best-selling watch brands in the world, and many of the well-known vintage designs continue to be the most sought-after models. In addition to the classic models, the G-Shock collection, with the highest level of technology and robustness in the watch world, represents the image of modern-day Casio.
Last updated at 09/02/2026 00:24:14
Casio Watch Mens G-Shock Gr-B300ec-1Adr Watch
Delivery $21.20
Casio GR-B300EC-1AJF
Free delivery
Casio G-Shock GR-B300EC-1AER
Delivery between 5–9 Sept $50
CASIO G-SHOCK GR-B300EC-1AJF
Delivery $38.44
Casio G-Shock Master of G GR-B300EC-1AER
Delivery between 4–16 Sept $48.67
Casio G-Shock GR-B300EC-1
Delivery $34.95
Casio G-shock Watch Solar Gr-b300 Used
Delivery $105.74
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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.
| Bracelet / Strap | Rubber/Silicone/PU |
| Glass | Mineral |
| Movement | Solar power |
| Water Resistance | 20 ATM (200m) |
Casio Watch Mens G-Shock Gr-B300ec-1Adr Watch
Delivery $21.20
Casio GR-B300EC-1AJF
Free delivery
Casio G-Shock GR-B300EC-1AER
Delivery between 5–9 Sept $50
CASIO G-SHOCK GR-B300EC-1AJF
Delivery $38.44
Casio G-Shock Master of G GR-B300EC-1AER
Delivery between 4–16 Sept $48.67
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. 👍
| Bracelet / Strap | Rubber/Silicone/PU |
| Glass | Mineral |
| Movement | Solar power |
| Water Resistance | 20 ATM (200m) |
