
Ref. GA-2100 · Sport
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G-Shock collection · 101 watches
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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 Casio GA-2100 (ref. GA-2100) is a quartz sport watch, with a 45.4mm carbon / resin case, 11.8mm thick. Water resistance is rated to 200m, under a mineral crystal. Manufacturer MSRP is $110.
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