Seiko Prospex vs Seiko Prospex

Side-by-side comparison of specifications and features

SeikoProspex

SKX013

SeikoProspex

SPB155 (Baby Alpinist)

Key Differences

Best Value

Seiko Prospex (Ref. SPB155 (Baby Alpinist))

Starting from $429

Price Comparison

Seiko Prospex

MSRP

$750

New

$984

Used

$350

Seiko Prospex

MSRP

$725

New

$429

Used

$527

MSRP New (Amazon) Used (eBay)

Comparison of Seiko Prospex, Seiko Prospex
Specification	Seiko Prospex	Seiko Prospex
Pricing
MSRP	$750	$725
New Price	$984	$429
Used Price (Low)	$350	$527
Used Price (High)	$1,349	$749
30-Day Trend	↑ +27.1%	↑ +23.7%
Used Price Range	$350 - $1,349	$527 - $749
Identity
Reference	SKX013	SPB155 (Baby Alpinist)
Nickname	N/A	N/A
Style	Diver, Tool, Sports	Field, Sports, Tool
Release Era	2000s	2010s
Dimensions
Diameter	38mm	38mm
Thickness	N/A	N/A
Lug Width	N/A	N/A
Lug to Lug	N/A	N/A
Movement
Movement	Automatic	Automatic
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Hardlex	Sapphire Crystal
Water Resistance	200m (diving)	200m (diving)
Bezel	Unidirectional rotating	Fixed
Dial
Dial Color	Black	Green
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 Seiko Prospex vs Seiko Prospex comparison is less about a universal winner and more about diver character versus field versatility, entry price versus premium finishing or specs. Treat it as a value-versus-upgrade decision — confirm the extra spend solves a problem you will notice every week.

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.

Seiko Prospex

Seiko Prospex is a better fit for mechanical-watch enthusiasts, diver styling.

Seiko Prospex

Seiko Prospex is a better fit for mechanical-watch enthusiasts, field styling.

Key Differences

Movement and upkeep

Seiko Prospex: 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

Seiko Prospex: 38mm

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

Water resistance

Seiko Prospex: 200m

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

Price and value

Seiko Prospex: $750

Seiko Prospex: $429

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

Seiko Prospex: diver

Seiko Prospex: field

Seiko Prospex leans more diver, while Seiko Prospex pulls toward field use case — pick the one that matches how you will actually wear it.

Crystal and materials

Seiko Prospex: Hardlex crystal · steel

Seiko Prospex: 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 Seiko Prospex If...

You are specifically shopping for a diver style watch.
You are comfortable paying more for a stronger feature set.

Choose Seiko Prospex If...

You are specifically shopping for a field style watch.
You want the lower current entry price.

Price and Value Notes

Seiko Prospex is often the value play at current pricing, while Seiko Prospex 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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Seiko Prospex

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $682 · Live listings

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Seiko Prospex

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $619 · 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.