Squale 1521 vs Squale 1521 COSC

Side-by-side comparison of specifications and features

Squale1521

1521

Squale1521 COSC

1521COSC

Key Differences

Best Value

Squale 1521 (42mm)

Starting from $1,100

Slimmest

Squale 1521 (42mm)

12.5mm thick

Price Comparison

Squale 1521

MSRP

$1,400

New

$1,354

Used

$719

Squale 1521 COSC

MSRP

$1,190

MSRP New (Amazon) Used (eBay)

Comparison of Squale 1521, Squale 1521 COSC
Specification	Squale 1521	Squale 1521 COSC
Pricing
MSRP	$1,400	$1,190
New Price	$1,354	N/A
Used Price (Low)	$719	N/A
Used Price (High)	$1,400	N/A
30-Day Trend	↑ +4.8%	N/A
Used Price Range	$719 - $1,400	N/A
Identity
Reference	1521	1521COSC
Nickname	N/A	N/A
Style	Diver, Tool, Vintage	Diver, Luxury
Release Era	1960s	2020s
Dimensions
Diameter	42mm	42mm
Thickness	12.5mm	13mm
Lug Width	20mm	20mm
Lug to Lug	48mm	46mm
Movement
Movement	Automatic	Automatic
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Sapphire Crystal	Sapphire Crystal
Water Resistance	500m (diving)	500m (diving)
Bezel	unidirectional rotating	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

Squale 1521 and Squale 1521 COSC can look close on a spec sheet, yet the tradeoffs that matter most are usually fit, features, and current pricing. They both touch the diver 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.

Squale 1521

Squale 1521 is a better fit for mechanical-watch enthusiasts, diver styling.

Squale 1521 COSC

Squale 1521 COSC is a better fit for mechanical-watch enthusiasts, diver styling.

Key Differences

Movement and upkeep

Squale 1521: automatic movement

Squale 1521 COSC: automatic movement

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

Size and wearability

Squale 1521: 42mm · L2L 48mm

Squale 1521 COSC: 42mm · L2L 46mm

Their size profiles are relatively close, so fit comes down to shape, weight, and how each watch sits on your wrist.

Water resistance

Squale 1521: 500m

Squale 1521 COSC: 500m

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

Price and value

Squale 1521: $1,100

Squale 1521 COSC: $1,190

These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.

Style and use case

Squale 1521: diver

Squale 1521 COSC: diver

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

Crystal and materials

Squale 1521: sapphire crystal · steel

Squale 1521 COSC: sapphire crystal · steel

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

Choose Squale 1521 If...

Its fit, feature mix, and price align better with your daily use.

Choose Squale 1521 COSC If...

Its fit, feature mix, and price align better with your daily use.

Price and Value Notes

Squale 1521 usually offers the lower entry price — confirm current listings because marketplace pricing can move quickly.

These two often land in a similar price band — which usually means fit, features, and current deal quality matter more than the sticker price.

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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Squale 1521

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $1100 · Live listings

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Squale 1521 COSC

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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.