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The Casio G-Shock GA-B2100-2A is the Bluetooth and solar version of the octagonal GA-2100, the slim "CasiOak" line that borrows the bezel shape of the original 1983 G-Shock. It adds Tough Solar charging and a Bluetooth link to the Casio Watches app for automatic time correction and phone-based settings, on top of 200-meter water resistance, a carbon core guard case and a double LED light. It suits people who want a tough everyday watch with analog hands and a small digital window, and who prefer never changing a battery. Against the standard GA-2100 it costs more but removes battery swaps and adds app control; against a G-Shock square it is slimmer and dressier but has a busier dial.
In stockShips from Singapore · priced in SGD (SGD 188.90) · duties may applyReturn policy
Owners of the GA-B2100 line praise the slim octagonal case, the solar charging and the Bluetooth time sync. Common complaints are the small, low-contrast digital display and the fiddly app setup.
The Casio G-Shock GA-B2100-2A is part of the octagonal GA-2100 line, which follows the design concept of the first G-Shock. It has a resin case and bezel, a resin band and mineral glass. The Carbon Core Guard structure and shock resistance add protection, and water resistance is 200 meters.
It is powered by Tough Solar and runs on a rechargeable battery. It links to a smartphone wirelessly over Bluetooth. The display combines an analog face with two hands and a digital readout. A hand shift feature moves the hands out of the way so the digital display is clear to see.
Two white LED lights cover the face and the digital display. Both have a Super illuminator and afterglow, and the illumination duration can be set to 1.5 or 3 seconds. Functions include world time, a stopwatch, a countdown timer, five daily alarms and an hourly time signal.
