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The Casio G-Shock GA2100RC-1A is a carbon core guard ana-digi watch with a 45mm black resin case and a textured strap. It offers shock resistance, 200m water resistance, world time, a 1/100-second stopwatch, countdown timer, five daily alarms, and double LED lights. Its slim 12mm profile and lightweight build make it comfortable for daily wear, and the hand shift feature clears the analog hands from the digital display. Compared to other G-Shock models, it is thinner and lighter, but the all-black dial with blue luminous hands can be hard to read in low light, and some owners find the negative display (if applicable) low contrast. It suits those who want a tough, feature-packed watch for outdoor activities or everyday use.
In stockSold by BOOKSANDPENSReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Owners praise the GA2100RC-1A for its ruggedness, slim profile, and feature set, but some criticize the legibility of the dial and the stiffness of the strap.
The Casio G-Shock GA2100RC-1A is a men's analog-digital watch with a 45mm wide, 12mm thick case made of black resin with a carbon core. It has a fixed bezel and a textured push-pull crown with function pushers. The solid black dial has white accents, blue luminous hands and index hour markers. A quartz movement powers it.
The watch is shock resistant and water resistant to 200 meters. The mineral crystal resists scratches. It has world time, a 1/100-second stopwatch, a countdown timer, 5 daily alarms and an hourly time signal. A hand shift feature moves the analog hands out of the way so the digital display is clear to read.
Both the face and the digital display have an LED light with a super illuminator and afterglow. You can set the illumination duration to 1.5 or 3 seconds. The strap is 24mm wide black resin with a buckle clasp.














