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The GA-B2100 is Casio's octagonal "CasiOak" case with two upgrades over the original GA-2100: Tough Solar charging and Bluetooth smartphone link. The slim module and carbon core guard keep it compact and light for a G-SHOCK, and the analog-digital dial stays readable. It suits people who want the stealth octagon look with solar power and automatic time sync, but it lacks the multi-band radio and full metal build of pricier G-SHOCKs. Owners praise the size, weight and legibility; some find the resin band stiff and the hands small in low light.
In stockShips from abroad · priced in JPY (¥19,800) · duties may applyReturn policy
Owners like the compact octagon case, solar power and phone sync, and call it an easy daily wear. Common complaints are the stiff resin strap and the small hands at night.
The G-SHOCK GA-B2100-1AJF is a men's digital and analog watch with a resin band and a black color scheme. It keeps the octagonal form of the GA-2100 and adds smartphone link and Tough Solar charging. A new slim module with an optimized circuit board layout holds the added components. Combined with the carbon core guard structure, it keeps the compact size of the previous models.
The case is carbon resin with an inorganic glass cover. The watch has a shock-resistant structure and 20 ATM water resistance. When the hands overlap the digital display, the hand shift feature moves them temporarily above the display.
Mobile Link uses Bluetooth to connect with compatible mobile phones. The watch has world time for 38 cities plus UTC, a stopwatch, a timer, 5 daily alarms and an hourly time signal. A dual LED light illuminates the dial and the LCD.
