Casio G-Shock vs Tissot Seastar 1000

Side-by-side comparison of specifications and features

CasioG-Shock

GM-S2100 (small metal)

TissotSeastar 1000

T120.410.11.041.00

Key Differences

Best Value

Casio G-Shock (Ref. GM-S2100 (small metal))

Starting from $227

Best Water Resistance

Tissot Seastar 1000 (Ref. T120.410.11.041.00)

300m (2x more)

Biggest Price Drop

Tissot Seastar 1000 (Ref. T120.410.11.041.00)

-4.8% in 30 days

Price Comparison

Casio G-Shock

MSRP

$200

New

$227

Used

$138

Tissot Seastar 1000

MSRP

$475

New

$380

Used

$395

MSRP New (Amazon) Used (eBay)

Comparison of Casio G-Shock, Tissot Seastar 1000
Specification	Casio G-Shock	Tissot Seastar 1000
Pricing
MSRP	$200	$475
New Price	$227	$380
Used Price (Low)	$138	$395
Used Price (High)	$1,272	$590
30-Day Trend	↑ +115.9%	↓ -4.8%
Used Price Range	$138 - $1,272	$395 - $590
Identity
Reference	GM-S2100 (small metal)	T120.410.11.041.00
Nickname	N/A	N/A
Style	Ana-Digi, Sports, Tool	Diver, Sports
Release Era	2010s	2020s
Dimensions
Diameter	40.5mm	40mm
Thickness	N/A	12.2mm
Lug Width	N/A	20mm
Lug to Lug	N/A	47mm
Movement
Movement	Quartz	Quartz
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Mineral Crystal	Sapphire Crystal
Water Resistance	200m (diving)	300m (diving)
Bezel	Fixed	Unidirectional rotating
Dial
Dial Color	Black	Blue
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

This Casio G-Shock vs Tissot Seastar 1000 comparison is less about a universal winner and more about wrist presence versus easier fit, water-ready utility versus dressier everyday wear, ana-digi character versus diver versatility. They both touch the sports use case, so smaller spec differences can matter more than brand preference.

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 low-maintenance daily wear, ana-digi styling.

Tissot Seastar 1000

Tissot Seastar 1000 is a better fit for low-maintenance daily wear, diver styling.

Key Differences

Movement and upkeep

Casio G-Shock: quartz movement

Tissot Seastar 1000: 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

Tissot Seastar 1000: 40mm · L2L 47mm

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

Tissot Seastar 1000: 300m

Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.

Price and value

Casio G-Shock: $227

Tissot Seastar 1000: $380

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

Tissot Seastar 1000: diver

Casio G-Shock leans more ana-digi, while Tissot Seastar 1000 pulls toward diver use case — pick the one that matches how you will actually wear it.

Crystal and materials

Casio G-Shock: mineral crystal · steel

Tissot Seastar 1000: sapphire crystal · steel

Crystal choice can change long-term wear expectations — one may prioritize scratch resistance while the other keeps cost or vintage feel in check.

Choose Casio G-Shock If...

You are specifically shopping for a ana-digi style watch.
You want the lower current entry price.

Choose Tissot Seastar 1000 If...

Swimming, beach use, or tougher daily wear is part of the plan.
You are specifically shopping for a diver style watch.
You are comfortable paying more for a stronger feature set.

Price and Value Notes

Casio G-Shock is often the value play at current pricing, while Tissot Seastar 1000 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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Tissot Seastar 1000

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $433 · Live listings

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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.