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.
in 3 offers
The lowest price for Casio G-Shock Gravitymaster Gr-b300-8a2er Watch right now is $475.04 at Helvetic Time, compared across 3 retailers.
The all-time low was $195.00 on 2 May 2026 — today's price is 144% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 10 Sept 2026.
Casio G-Shock Gravitymaster Gr-b300-8a2er 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 10/09/2026 11:02:32
Casio GR-B300-8A2ER G-SHOCK Quartz GRAVITYMASTER Men's Watch
Delivery between 17–24 Sept $30.60
Casio G-Shock GR-B300-8A2ER Carbon Grey 54.7mm 2026
Delivery $48
Casio G-shock Gr-b300-8a2jf Gravitymaster Master Of Air Bluetooth Men
Delivery $22.85
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!
originally posted on casio.com
Watch has the easiest face to quickly read, one button dual- time swap, very well illuminated night use as well. One of the best color patterns and most comfortable of all my g-shocks (over 15 lol).
originally posted on casio.com
This watch looks amazing and will instantly be added to the daily rotation.
originally posted on casio.com
This watch is great. Very precise hands and the second hand reminds me of a weather vane which is cool. The color scheme is perfect and it's becoming my most worn watch.
| Water Resistant | 20 |
| Case Material | Carbon & Resin |
| Strap Material | Resin |
| Movement | Solar |
| Dial Material | Mineral |
Casio GR-B300-8A2ER G-SHOCK Quartz GRAVITYMASTER Men's Watch
Delivery between 17–24 Sept $30.60
Casio G-Shock GR-B300-8A2ER Carbon Grey 54.7mm 2026
Delivery $48
Casio G-shock Gr-b300-8a2jf Gravitymaster Master Of Air Bluetooth Men
Delivery $22.85
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!
Watch has the easiest face to quickly read, one button dual- time swap, very well illuminated night use as well. One of the best color patterns and most comfortable of all my g-shocks (over 15 lol).
This watch looks amazing and will instantly be added to the daily rotation.
This watch is great. Very precise hands and the second hand reminds me of a weather vane which is cool. The color scheme is perfect and it's becoming my most worn watch.
Having been an owner of Casio watches since they came on the market here in the USA back in the early 80's, this watch like all the others I have purchased are excellent in quality, function and durability.
I miss some of the features of some of the older Gravitymaster watches. For the price, it could be more “Master of G.” A compass, a backlit digital display, maybe even something cool like weather forecasts via the mobile link to the Casio Watches app. It’s very light and looks nice, but it’s merely good instead of great.
Gshock s now getting smaller and cheap this one is cheap I’m moving on to another brand after 25 years
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.
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. 👍
why spend more money when this ticks all of the boxes??other models cost twice as much or maybe triple,also it is stunning gorgeous and beautiful timepiece more than likely will be best seller
| Water Resistant | 20 |
| Case Material | Carbon & Resin |
| Strap Material | Resin |
| Movement | Solar |
| Dial Material | Mineral |
