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Casio G-Shock GA B2100

From the oldest, watch in my collection to one of the newest in the form of the Casio G-Shock GA B2100.

Here is my review and why I think this is already a modern classic.

Let’s Talk About Casio

Founded in 1946 in Japan by Tadao Kashio he was joined by his brothers and were experts in producing calculators and other electronic goods but really became a household name in the 1970s.

Casio released their first digital watch in 1974 aptly named The Casiotron and in 1984 released their first ever version of the G-Shock the DW-5000C and they have been making iterations of it ever since.

G-Shocks are legendary watches however with a small wrist like mine wearing one was never really been an option as they are big big watches.

So when Casio released the GA-2100 back in 2019 I was instantly smitten and by the looks of so was everyone else becoming the talk of the watch community.

The Design

When this watch was first released, the watch community went wild for it and the main reason for this was the octagonal shape of the case, which is very reminiscent of the Audemars Piguet Royal Oak, and the watch was to be dubbed the “CasiOak” forever more.

The Casio G-Shock GA B2110 has dimensions of 48.5×45.4×11.9mm, this really is a good fit for us gents with smaller wrists who did not think they could ever wear a G-Shock.

Mineral glass to withstand most scratches this really is a watch you can make your daily wear and not be too worried about it get banged about a bit, it also weighs in at a very light 51g but it still has enough presence to get admiring glances.

After a few weeks on the wrist, I can tell this is a comfortable wear; it definitely has a more casual vibe about it so I certainly will not be wearing to more dressy events but for your more casual outfits this is perfect.

The watchstrap is made of resin for extra strength and enough holes to ensure that even the smallest wrist can wear in comfort Casio really did a very good job on this.

The dial itself are indices which are applied; the hour and minute hands have a decent amount of Neobrite lume but none on the hour markers which is a missed opportunity in my view but this is negated by the backlight which has a nice brightness to read in light or dark environments.

The case material is made of a very lightweight and shock resistant resin, which has carbon fiber embedded throughout its structure for additional strength and durability.

The face is also a mix of analogue and digital and this is something I really like as it give you the classic Casio look with a bit of modern too.


What really stands out on the Casio G-Shock GA B2100  apart from the design is the added functionality from the original release and a main reason why I decided to wait and purchase this one.

  • Bluetooth connectivity for accurate timekeeping, this connects to the Casio app for easy use in changing certain functions such as the time
  • Solar – converts any ight source to power the watch
  • 5 Alarms
  • Auto Calendar
  • Battery charge indicator
  • LED light for up to 3 seconds with afterglow
  • Stopwatch
  • World time for 300 cities
  • 200m water resistant
Colours & Pricing

If you want to have a pop more colour and stand out from the crowd even more the GA-B2100 comes in four additional colours Green, Blue, All Black and for those who really want to stand out a very striking yellow

The price for a watch that is so packed with technology and functionality and great looks is £129 with the yellow slightly more expensive at £139 but you really can’t go wrong if you are considering purchasing this watch.

My Thoughts

Whilst I really liked the original that came out in 2019, I heard the rumours of a Bluetooth version and decided to hold off until it came out and I am very happy I did.

From the design, smaller case dimensions and a watch packed full of technology and functionality I can see why this watch was and still is a big favourite with watch fans and non-watch fans alike.

The price is fantastic and the colour variants mean there is something for everyone overall this watch just hits so many high notes, definitely recommended.

Why not check out the different variants Casio G-Shock GA B2100 Range

What do you think of the Casio G-Shock GA B2100?

Let me know in the comments below and see you for the next one

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