Casio G-Shock vs Casio G-Shock

Side-by-side comparison of specifications and features

CasioG-Shock

GM-S2100 (small metal)

CasioG-Shock

GMA-S2100 (small)

Key Differences

Best Value

Casio G-Shock (Ref. GMA-S2100 (small))

Starting from $128

Price Comparison

Casio G-Shock

MSRP

$200

New

$227

Used

$138

Casio G-Shock

MSRP

$150

New

$128

Used

$103

MSRP New (Amazon) Used (eBay)

Comparison of Casio G-Shock, Casio G-Shock
Specification	Casio G-Shock	Casio G-Shock
Pricing
MSRP	$200	$150
New Price	$227	$128
Used Price (Low)	$138	$103
Used Price (High)	$1,272	$866
30-Day Trend	↑ +115.9%	↑ +3.6%
Used Price Range	$138 - $1,272	$103 - $866
Identity
Reference	GM-S2100 (small metal)	GMA-S2100 (small)
Nickname	N/A	N/A
Style	Ana-Digi, Sports, Tool	Ana-Digi, Sports, Tool
Release Era	2010s	1980s
Dimensions
Diameter	40.5mm	42.9mm
Thickness	N/A	N/A
Lug Width	N/A	N/A
Lug to Lug	N/A	N/A
Movement
Movement	Quartz	Quartz
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Resin
Crystal	Mineral Crystal	Mineral Crystal
Water Resistance	200m (diving)	200m (diving)
Bezel	Fixed	Fixed
Dial
Dial Color	Black	Black
Luminous	Yes	Yes
Community
Review Rating	N/A	N/A
In Collections	N/A	N/A
On Wishlists	N/A	N/A
Forum Threads	N/A	N/A

Quick Summary

Casio G-Shock and Casio G-Shock can overlap on price or use case, but the buying decision usually comes down to wrist presence versus easier fit, entry price versus premium finishing or specs. Start with fit first — case width and lug-to-lug usually matter more than secondary features if wrist comfort is a concern.

How to choose

The biggest practical difference is usually movement and upkeep. Start with wrist fit and movement preference, then use water resistance and price to break the tie.

Casio G-Shock

Casio G-Shock is a better fit for smaller wrists, low-maintenance daily wear, ana-digi styling.

Casio G-Shock

Casio G-Shock is a better fit for buyers who want more wrist presence, low-maintenance daily wear, ana-digi styling.

Key Differences

Movement and upkeep

Casio G-Shock: quartz movement

Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.

Size and wearability

Casio G-Shock: 40.5mm

Casio G-Shock: 42.9mm

Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.

Water resistance

Casio G-Shock: 200m

Water resistance is similar on paper, so focus on fit, features, and price instead.

Price and value

Casio G-Shock: $227

Casio G-Shock: $128

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Style and use case

Casio G-Shock: ana-digi

Both lean into a similar ana-digi use case — the choice is more about fit, features, and price than category.

Crystal and materials

Casio G-Shock: mineral crystal · steel

Casio G-Shock: mineral crystal · resin

Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.

Choose Casio G-Shock If...

You want a smaller case footprint on the wrist.
You are comfortable paying more for a stronger feature set.

Choose Casio G-Shock If...

You prefer more dial presence and a larger case feel.
You want the lower current entry price.

Price and Value Notes

Casio G-Shock is often the value play at current pricing, while Casio G-Shock makes more sense if you will use its extra features regularly.

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Where to Check Deals

Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.

Check current deals on Amazon and eBay

Prices change often, so compare the latest listings and condition options before you buy.

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Casio G-Shock

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $311 · Live listings

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Casio G-Shock

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $137 · Live listings

Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.

Comparison FAQ

Which one is better for smaller wrists?

Start with case width and lug-to-lug. The watch that looks smaller on paper is often the safer choice, but lug shape and thickness still affect how it wears.

Which is better for swimming or rough daily wear?

Use the water resistance row as the first filter. Higher ratings generally give more flexibility for swimming and water exposure, but strap choice and overall condition still matter.

Should I choose based on price alone?

Price matters, but the better buy is the watch that matches your fit, feature priorities, and use case. Check live listings first, then decide whether the price gap actually changes the ownership experience.