Is the GA2100-7A good for swimming?

Yes. It is rated to 20 ATM, or 200 meters, which covers swimming and snorkeling. Casio does not rate it for scuba diving.

Does it have solar power or radio sync?

No. It runs on a standard battery and sets time manually. Solar and radio-controlled versions sit higher in the G-Shock range.

How does it compare with a full-size G-Shock?

It is noticeably slimmer and lighter, so it fits under sleeves better. It gives up some features, such as solar charging, that larger models offer.

The watch with its resin strap and a Casio manual. The battery is already fitted.

Is the crystal scratch resistant?

It uses mineral glass, which resists light scratches but can mark with hard contact. It is not sapphire.

Can the strap be replaced?

The strap attaches with standard spring bars, so a jeweler can swap it. It is not a quick-release strap.

What do buyers say about the Casio Men's G-Shock Black Dial Watch GA2100-7A?

Rated 4.3 out of 5 from 29 ratings.

Casio Men's G-Shock Black Dial Watch GA2100-7A

Best price now

$104.99at WalmartChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Walmart

Casio Men's G-Shock Black Dial Watch GA2100-7A

Best price now

$104.99at WalmartChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $104.99 at Walmart on Nov 11.

Our take on the Casio Men's G-Shock Black Dial Watch GA2100-7A

The GA2100-7A is the white-dial version of Casio's 'CasiOak' — a slim G-Shock whose octagonal bezel and integrated resin strap echo a luxury sports watch at a fraction of the bulk. It runs on quartz with a mineral crystal, 200 m water resistance, analog hands with a small digital window, and G-Shock's usual shock resistance. It suits people who want a tough everyday watch that looks sharper than a typical chunky G-Shock. Against other GA2100 colorways it is the same watch with a white face; against full-size G-Shocks it is thinner and lighter but drops solar power and radio sync, which the higher-end G-Shock line offers.

Best forEveryday wear with casual or streetwear outfitsBuyers who want a slim, light G-ShockSwimming and outdoor use up to 200 mA first analog-digital watch

Pros

Slim, lightweight case for a G-Shock
200 m water resistance
Shock-resistant resin build
Analog hands plus digital date and time window
Octagonal bezel gives it a dressier look

Cons

Mineral crystal scratches more easily than sapphire
No solar charging or radio time sync
White dial and light bezel show marks
Hands can be hard to read in low light
Resin strap is basic and not quick-release

Casio Men's G-Shock Black Dial Watch GA2100-7A prices at every store

WalmartNew
In stockSold by SASY420Returns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$104.99Free shippingChecked Nov 11
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What reviewers say

4.3 / 529 ratings

Owners rate it well overall, praising the slim case, light weight and the look of the octagonal bezel. Common complaints are legibility in dim light and the white surfaces picking up dirt.

What people mention

Size and weightPraisedOwners say it wears much thinner and lighter than older G-Shocks.
DesignPraisedThe octagonal bezel and integrated strap get frequent compliments.
LegibilityCriticisedReviewers say the hands and markers are hard to read in dim light.
DurabilityPraisedBuyers report it survives knocks, scratches and water without trouble.
White finishMixedSome owners like the white dial, others say it shows dirt and smudges.

About the Casio Men's G-Shock Black Dial Watch GA2100-7A

This is the Casio G-Shock GA2100-7A, a men's quartz watch with a black dial. It has a stainless steel case and a resin strap.

The watch has a scratch-resistant mineral crystal. It is water resistant up to 20 ATM, which is 200 meters or 660 feet.

Brand: Casio
Series: G-Shock
Model: GA2100-7A
Dial: Black
Case: Stainless steel
Strap: Resin
Movement: Quartz
Crystal: Scratch-resistant mineral
Water resistance: 20 ATM (200 meters / 660 feet)
Size: One size

Specifications

size: One SizeSource
color: BlackSource

Questions and answers

Is the GA2100-7A good for swimming?: Yes. It is rated to 20 ATM, or 200 meters, which covers swimming and snorkeling. Casio does not rate it for scuba diving.
Does it have solar power or radio sync?: No. It runs on a standard battery and sets time manually. Solar and radio-controlled versions sit higher in the G-Shock range.
How does it compare with a full-size G-Shock?: It is noticeably slimmer and lighter, so it fits under sleeves better. It gives up some features, such as solar charging, that larger models offer.
What is in the box?: The watch with its resin strap and a Casio manual. The battery is already fitted.
Is the crystal scratch resistant?: It uses mineral glass, which resists light scratches but can mark with hard contact. It is not sapphire.
Can the strap be replaced?: The strap attaches with standard spring bars, so a jeweler can swap it. It is not a quick-release strap.
Where is the Casio Men's G-Shock Black Dial Watch GA2100-7A cheapest?: At Walmart, for $104.99, as of our latest check.
What do buyers say about the Casio Men's G-Shock Black Dial Watch GA2100-7A?: Rated 4.3 out of 5 from 29 ratings.