How does the GM-2100YM-8A differ from a standard square G-Shock?

It uses the octagonal GM-2100 case with a metal bezel and analog hands plus a digital window, and it is much slimmer at 11.8 mm. A square G-Shock like the DW-5600 is all-digital and thicker.

Is it good for swimming?

Yes. It is rated to 200 m water resistance, which covers swimming and snorkeling. Casio does not rate it for scuba diving.

Does it have a light?

Yes. It has a double LED light with Super Illuminator, and you can set the glow to 1.5 or 3 seconds.

The watch, its strap and the Casio paperwork. It comes in Casio's standard G-Shock tin.

Does it need charging or a battery change?

It runs on a quartz battery, not solar or Bluetooth charging. Expect a battery replacement every few years.

How big does it wear?

The case is 49.3 mm long, 44.4 mm wide and 11.8 mm thick, so it wears like a mid-size watch and fits under a shirt cuff.

Casio G-Shock Fine Metallic Series GM-2100YM-8AJF Analog Digital Watch

Q: Where is the Casio G-Shock Fine Metallic Series GM-2100YM-8AJF Analog Digital Watch cheapest?

At Watchspree, for $192.19, 21% under what the other stores charge, as of our latest check.

Q: What do buyers say about the Casio G-Shock Fine Metallic Series GM-2100YM-8AJF Analog Digital Watch?

Buyers like: Legit online seller with rare Casio pieces at reasonable prices; Quick responses and international delivery; Comfortable, classy watch. Common complaints: Delivery took a while (though free and smooth).

Q: Where can I buy the Casio G-Shock Fine Metallic Series GM-2100YM-8AJF Analog Digital Watch?

6 stores we checked sell it, including Watchspree, Walmart, Best Buy, eBay, Scarce & Co.

Best price now

$192.19at WatchspreeChecked Nov 3

21% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

Visit Watchspree

What reviewers say

Owners describe it as a comfortable, classy watch with a sturdy band and casing that is easy to clean.

What people mention

ComfortPraisedOwners say the soft silicone band and slim case make it comfortable for all-day wear.
BuildPraisedBuyers describe the band and casing as sturdy and easy to clean.
LooksPraisedThe monochrome silver finish and octagonal bezel are called classy and versatile.
ReadabilityMixedThe grey-on-grey dial looks sharp in daylight but can be harder to read in dim light.
ControlsCriticisedThe analog-digital button layout takes practice to set and use.

About the Casio G-Shock Fine Metallic Series GM-2100YM-8AJF Analog Digital Watch

The Casio G-Shock GM-2100YM-8AJF is an analog-digital quartz watch from the Fine Metallic Series. It has a grey dial and a monochrome silver color scheme. The octagonal GM-2100 bezel is metal, and it is paired with a matching tough silicone band. The band surface is finished with silver vapor deposition for a metallic glimmer.

The case is resin with a stainless steel bezel, and the case back is screwed on. The crystal is mineral glass. The watch is shock resistant and water resistant to 200 meters. A buckle clasp fastens the band.

It has world time, a 1/100-second stopwatch, a countdown timer, 5 daily alarms and an hourly time signal. It also has a full auto-calendar showing month, day and date, and a 12/24-hour display. The hands are luminous, and the hand shift feature and button operation tone on/off are included. The double LED light has a Super illuminator with selectable 1.5 or 3 second illumination.

Model

GM-2100YM-8AJF (item number GM-2100YM-8A)

Movement

Quartz

Display

Analog and digital

Case

Resin case with stainless steel bezel

Band

Tough silicone with silver vapor deposition finish

Crystal

Mineral glass