
Ref. GR-B300 · Sport
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G-Shock collection · 102 watches
The market
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Casio on the secondhand market
+10.5%
2026 so far · +1.3% to +21.6% · 47 matched watches
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The community take
The Casio GR-B300 is praised for its gorgeous and highly readable analog dial, with the solar charging system noted as robust. Owners find it a very large but surprisingly light watch, with some reporting it fits smaller wrists. The fighter jet-inspired design and dual-time function are highlighted as appealing, offering good value. However, one owner found the build quality noticeably lower than other G-Shocks, with materials feeling less solid. The propeller feature is described as a fun gimmick, and the watch is considered full-featured but large. Overall, owners rate the Casio GR-B300 highly for its readable analog dial and surprisingly light wearability despite its size.
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