How does the metal CasiOak differ from the resin GA-2100?

Same octagonal shape and analog layout, but this one has a stainless steel case and bracelet instead of resin. That makes it heavier and dressier, while the resin model is lighter and cheaper.

Is it safe to swim with?

Yes. Casio rates it to 20 ATM, or 200 meters, which covers swimming and showering. It is not a dive computer, so don't press the buttons underwater.

Does it have Bluetooth or solar power?

No. This is a standard quartz model with a stopwatch and 12/24-hour display. The Bluetooth and Tough Solar features belong to other CasiOak variants.

How does the bracelet fit?

It is a steel link bracelet with a fold-over clasp. Links are pinned, so resizing usually needs a small tool or a jeweler.

Is the crystal sapphire?

No, it is scratch-resistant mineral glass. It handles everyday wear but can still pick up fine scratches over time.

Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR

Best price now

$569.97at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR

Best price now

$569.97at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $569.97 at Walmart on Nov 9.

Our take on the Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR

The GM-B2100SD-1A is the full-metal version of Casio's CasiOak, the G-Shock whose octagonal bezel and slim profile echo a luxury steel sports watch. The case and bracelet are stainless steel, the dial is grey with applied indices and no numerals, and it runs on quartz with a stopwatch and 200-meter water resistance. It suits people who want the CasiOak look with metal weight and finish rather than the resin original. Against the resin GA-2100 it is heavier and more formal; against steel rivals it keeps G-Shock shock resistance and a mineral crystal rather than sapphire.

Best forFans of the CasiOak shape who want a metal case and braceletEveryday wear that has to survive knocks and waterBuyers who prefer analog hands with no numerals on the dialGift for someone who likes steel sports watches but wants quartz reliability

Pros

Full stainless steel case and bracelet give it a dressier feel than the resin CasiOak
Octagonal bezel and slim case wear well on most wrists
200-meter water resistance covers swimming and showering
Quartz movement needs no winding and keeps good time
Stopwatch and 12/24-hour display add everyday utility
Mineral crystal resists scratches better than acrylic

Cons

Heavier than the resin GA-2100, which some find noticeable on the wrist
Mineral glass, not sapphire, so it can still pick up marks
No numerals and small indices make quick reading harder at a glance
Steel bracelet links are pinned and sizing takes a jeweler or a tool

Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR prices at every store

WalmartNew
In stockSold by Inventory AdjustersReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$569.97Free shippingChecked Nov 9
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What reviewers say

Owners of the metal CasiOak praise the finish and the way it dresses up compared with the resin model, and most find it comfortable once sized. Common complaints are the weight, the legibility of the plain grey dial and the bracelet, which some find rattly for a steel watch.

What people mention

WeightMixedOwners like the solid feel but some find the steel version heavy for all-day wear.
LegibilityCriticisedThe grey dial with indices and no numerals is harder to read quickly, especially in dim light.
BraceletMixedThe steel bracelet is praised for looks but some call it rattly and fiddly to size.
BuildPraisedBuyers say the case feels sturdy and the finish holds up to daily knocks.
Water resistancePraisedOwners report swimming and showering without problems at 200 meters.

About the Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR

This is the Casio CasiOak GM-B2100SD-1ACR, a men's analog quartz watch. It has a gray dial with plain index markers and no numerals. The case and bracelet are stainless steel.

A mineral glass crystal covers the dial and resists scratches. The watch is water resistant to 20 ATM (200 meters, 660 feet) and includes a stopwatch function.

Movement: Quartz
Display: Analog
Dial: Gray, index markers without numbers
Case material: Stainless steel
Bracelet: Stainless steel
Glass: Mineral
Water resistance: 20 ATM (200 meters / 660 feet)
Time format: 12 hours, 24 hours
Functions: Stopwatch
Gender: Men's

Specifications

color: GraySource
Movement Type: QuartzSource
Type of Index: Index (without numbers)Source
Display Type: AnalogSource
Glass

Questions and answers

How does the metal CasiOak differ from the resin GA-2100?: Same octagonal shape and analog layout, but this one has a stainless steel case and bracelet instead of resin. That makes it heavier and dressier, while the resin model is lighter and cheaper.
Is it safe to swim with?: Yes. Casio rates it to 20 ATM, or 200 meters, which covers swimming and showering. It is not a dive computer, so don't press the buttons underwater.
Does it have Bluetooth or solar power?: No. This is a standard quartz model with a stopwatch and 12/24-hour display. The Bluetooth and Tough Solar features belong to other CasiOak variants.
How does the bracelet fit?: It is a steel link bracelet with a fold-over clasp. Links are pinned, so resizing usually needs a small tool or a jeweler.
Is the crystal sapphire?: No, it is scratch-resistant mineral glass. It handles everyday wear but can still pick up fine scratches over time.
Where is the Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR cheapest?: At Walmart, for $569.97, as of our latest check.