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The GA-B2100-2A is the solar and Bluetooth version of Casio's slim 2100-series G-Shock, with an octagonal bezel, carbon core guard case and a black dial on a resin strap. It adds Tough Solar charging and Smartphone Link time sync to the analog-digital layout, plus 200M water resistance, world time, a 1/100-second stopwatch, timer and five alarms. It suits people who want a tough everyday watch with automatic timekeeping and no charging cable. Against the original GA-2100 it trades battery swaps for solar and adds Bluetooth; against the square G-Shock models it is slimmer and lighter, but its analog hands and small digital window take more getting used to.
In stock
In stockSold by BOOKSANDPENSReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $135.00 on Nov 10 at CreationWatches. Tracked across 1 store since Nov 10.
Owners of the 2100 line praise the slim, lightweight case and the tough, understated look, and the solar-plus-Bluetooth version removes the usual battery worry. Common complaints are the small digital display, fiddly button operation and the need to keep the watch in light to stay charged.
Meet the Casio G-Shock GA-B2100-2A, a navy blue 2100 series watch built for modern, active lifestyles. This men’s analog digital watch combines Casio’s legendary shock resistance with a slim carbon core guard structure, offering everyday comfort without sacrificing toughness. Tough Solar technology keeps it charged, while Bluetooth Smartphone Link ensures automatic time updates, easy setting adjustments, and a convenient phone finder. Perfect for travel, training, and outdoor adventure, it delivers 200M water resistance, world time, 1/100 second stopwatch, countdown timer, and five daily alarms to keep you on schedule. The black dial, mineral glass crystal, and double LED illumination provide clear legibility in any light. With up to seven months of power on a full charge, this Casio G-Shock solar watch is the ideal choice for men who want reliable performance, contemporary style, and smart connectivity in one rugged timepiece.
