Best Guide to All G-Shock Watches — composed by Experts

[G-SHOCK Bluetooth] GA-B2100 — Daily Life with Formal Fashion

Speaking of the 2100 series, it is known as a popular model with a modern arrangement of the square shape that is the design concept of the first G-SHOCK.

By the way, the GA-B2100 is available in 5 colors. It will be one of the pleasures to choose a color that you can wear depending on your coordination and mood.

This time, I wore GA-B2100-1A, but I also liked the black x black color GA-B2100-1A1. The design is more subdued than the GA-B2100-1A, and it is easy to coordinate with a chic and mature atmosphere.

Other yellow, blue, and green are eye-catching colors that play a leading role in fashion. Not only for casual fashion, but also for business style. In fact, this color lineup is said to be a reproduction of G-SHOCK’s first color model.

All colors are attractive, and it is recommended to match them with friends and lovers as gifts.

GA-B2100 can be connected to a smartphone via Bluetooth, and from the dedicated app “CASIO WATCHES”, automatic clock correction, world time city setting of more than 300 cities, home time / world time display replacement, timer / alarm setting, mobile phone search Functions such as are available.

Also, when linked to a smartphone, it is possible to record the date and time and location on the map in the app. In addition, it is also convenient to have a function that reminds you of the schedule created by the app on the GA-B2100 side.

By the way, GA-B2100 is equipped with solar charging. If you use a smart watch, you may forget to charge it, so I’m really happy about this point.


GA-B2100 Profile / Casio G-Shock
Average Amazon Price: $180 (yes, we may earn a commission on qualifying purchases from our links to Amazon). Check the Price on Amazon →
Year of first release: 2022
The most distinctive specs:
— Retro Look (inherits the design concept of the very first G-SHOCK)
— Carbon Core Guard structure (protects the module by enclosing it in a carbon case. The case is made of fine resin embedded with carbon fibers for outstanding strength and crack resistance)
— Solar-powered (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
— CASIO WATCH App (you may manage all watch settings through your phone)
— Mobile link (Wireless linking using Bluetooth(R)) (for time sync with your phone data)
— 200-meter water resistance (good for swimming but not for deep diving)
Other colors and full specs: GA-B2100 Wiki Page

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