CASIO G-SHOCK GA-2100VB-1ADR SPECIAL COLOUR MODELS BLACK WATCH

What is the Carbon Core Guard structure?

It is Casio's name for building the shock protection into a carbon-reinforced case rather than wrapping a conventional case in extra guards. The case and bezel are carbon and resin. The practical result is the one you can feel: this watch keeps G-SHOCK's shock-resistant construction at 11.8mm and 51 grams, where older G-SHOCKs needed considerably more bulk to do the same job.

Why are there only two hands, and what is the small dial for?

The hands show hours and minutes; the small dial shows the day of the week. Running seconds live in the digital display instead, which is also where the month and date sit. There is a hand shift feature too — press a button and the hands swing clear of the digital window so you can read it without anything in the way.

How does 11.8mm wear, and will it fit my wrist?

It is one of the slimmest G-SHOCKs made, and at 51 grams it is light for the footprint. The case is still a broad 48.5 × 45.4mm, so it reads as a full-size G-SHOCK from above while sitting flat enough to slide under a sleeve. Casio does not publish a compatible band size for this model, so we cannot quote a wrist range — worth trying one on if you are unsure.

Can I swim, snorkel or surf with it?

Yes. 200-metre (20 BAR) water resistance covers swimming, snorkelling and surface water sports. It is not a scuba diving watch — the rating is a laboratory pressure measurement rather than a depth you should descend to — and you should not press the buttons while the watch is submerged.

How readable is it in the dark?

Two separate systems, which is unusual at this size. A Super Illuminator lights the analog face and an LED backlight lights the digital display, both white, both with an afterglow, and you can set the illumination to run for 1.5 or 3 seconds. Neobrite on the hands also holds a glow after exposure to light, so you get some readability without pressing anything.

Does it charge from light or connect to my phone?

No to both. This reference runs on two SR726W batteries for approximately three years — there is no solar charging and no Bluetooth or app connection. Timekeeping is held to ±15 seconds per month. When the batteries run down, bring the watch to any City Chain outlet; having them changed by a service centre keeps the case seal correctly reseated, which protects the 200-metre rating.

What warranty does this watch come with?

The GA-2100VB-1ADR comes with Casio's official 1-year warranty when purchased from City Chain Singapore, an authorised Casio retailer.