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The GA-B2100BNR-1A is a blacked-out version of Casio's GA-B2100, the slim 'CasiOak' that shrinks the classic G-Shock into an octagonal case about 11.8mm thick. It adds solar charging and Bluetooth phone pairing to the analog-digital display, so time syncs automatically and the battery stays topped up from light. It keeps the full G-Shock kit: 200m water resistance, stopwatch, timer, alarms, world time, and a Super Illuminator LED. Against the standard GA-2100 it is the better-equipped model; against metal-cased G-Shocks it is lighter and cheaper-feeling, but far easier to wear daily.
In stock
Store links may earn us a commission. Price via Klarna.
Lowest price we've seen: $155.00 on Nov 8 at First Class Watches. Tracked across 1 store since Nov 8.
Owners of the GA-B2100 line praise the slim fit, light weight and the set-and-forget solar/Bluetooth combo. Common complaints are the dim negative display and the plastic feel of the strap and case.
