It is exactly as I saw it and wanted it. Super lightweight, solar with a 10-year battery life (authorized replacement for about €30 as I learned), bluetooth for automatic adjustment, and an incredibly easy-to-read dial, something very important for me since I generally need glasses. I didn't find this dial, set up and readable like this, in any other model of the series.

The fact that it is yellow makes it summery and somewhat restrictive for professional visits, but I bought another one in the color Caution Yellow and made a small but substantial modification as you will see in the photos. So now I have the easy black with the readable dial and the unique yellow even more unique! Personally, I consider this modification ideal for both, so they will stay like this.

The watch is amazing!! It is slim compared to other G-Shock watches and more compact. My wrist is 15.8 cm and it fits perfectly, you almost don't feel it on your hand! The yellow color is a bit lighter than in the photos, but still very nice!

After the success of the GA-2100 in 2018, the company released the watch in a solar-bluetooth version.
The watch has the classic beloved octagonal shape that earned it the nickname "Casioak", it remains the thinnest G-Shock in thickness, with a good size on the wrist even for smaller wrists (16.5 cm wrist circumference in the photo).
The hands are distinguishable from afar and illuminate in the dark, but for better use, the watch's light is noticeably stronger than the previous model and adequately illuminates the screen and dial.
The screen with the watch's other functions is relatively small compared to the dial, however, the hands can be moved away to make the screen more distinguishable (as shown in the photo).
The watch connects automatically or manually to the app on the mobile phone, from where you can control all the watch's functions without using the small screen.
Otherwise, the watch has the known functions (world time, stopwatch, countdown timer, alarm) which are displayed in this model by the hand at the 9 o'clock position.
In my opinion, if the user does not need the larger screens of other G-Shock models, this particular watch is one of the best options in terms of style and price.