

⏳ Own Time, Own Style — The G-Shock That Works as Hard as You Do
The Casio G-Shock GA-2100-1A4ER is a sleek, 45mm analog-digital quartz watch featuring a shock-resistant resin case reinforced with carbon core technology. It offers world time across 29 zones, a precise stopwatch, daily alarms, and a day-date calendar. With 200m water resistance and luminous orange hands, it’s designed for professionals who demand durability, accuracy, and style in every time zone.
| ASIN | B09T6QZCS3 |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | 31,498 in Fashion ( See Top 100 in Fashion ) 148 in Men's Wrist Watches |
| Country of origin | China |
| Customer reviews | 4.4 4.4 out of 5 stars (753) |
| Date First Available | 23 Feb. 2022 |
| Department | Men's |
| Is discontinued by manufacturer | No |
| Item model number | GA-2100-1A4ER |
| Manufacturer | Casio |
| Product Dimensions | 40 x 47 x 23 cm; 51 g |
Z**A
Great watch
For a G Shock it's a slim watch and looks good. The red is not as bright as it looks in the pictures. Same old Casio g shock rigmarole to set the time. That can be annoying to a new user. To be quite honest the digital read out is useless because of the size. The packaging is a cardboard box not the tin of old. All in all it's a decent casioaks watch.
T**N
Can't beat a g shock watch
Excellent g shock watch ⌚️
C**T
Review
Very nice just a bit tricky to set the date & time. Overall was great!
G**.
Really lovely and good for the price
So nice my partner so loved it
L**G
Fake.
Fake watch.
D**G
A very nice compact G-SHOCK
The watch arrived well packaged. Out of the box the watch looks good and after a few days the strap has softened nicely. The instructions are not particularly helpful and I watched a youtube video to set the time etc. I've always had cheap casios which have been great so had no worries about the quality of the watch. This is not a typical bulky looking G-SHOCK which is what I wanted.
C**S
Horrible dark watch
Casio make a lot of G-Shocks including this one Ga-2100. Mostly known as the Casioaks (don’t know why), they have a good reputation for 200m water resistance, stopwatch, countdown timer, world clock and an incredible backlight. This one however is too dark to really see the digital display because it’s what they call a negative display. Why did I buy it? So I could strip out the insides and put a decent movement inside. The Casio AQ-S800 which is a better watch because it’s solar powered and you can see the face too.
M**S
Does it's Job
Nice Casio watch has a few cool features for time zones.
J**O
Rien a redire, sa réputation la précède. Donne l'heure et le jour et plusieurs fonctionnalités. Très résistante, 8 mois d'utilisation intensive et pas une égratignure. Le seul defaut serait les réglages, pas très intuitifs, et qui nécessitent le manuel d'utilisation. Le prix est clairement justifié, et rapport qualité prix excellent.
E**.
I believe that this model is discontinued in North America. You may be able to find a style that you like at a retailer and if you want it, I suggest you buy it. Amazon delivery was exactly as expected. Watch is very beautiful with a blacked out dial with red accents. If you like a digital display, this watch is not for you. The digital display is very small. Very light and comfortable to wear with not having a bulky G Shock. You won’t break the bank to purchase this watch, so it is a great everyday beater or vacation watch.
A**A
The quality of this watch for its price has no comparison to any other in my collection. A must have!
M**T
Super Uhr
P**E
Un peu petite. Mais unisexe et très belle.
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