Seiko 5 Sports GMT vs Seiko 5 Sports SRPE55

Side-by-side comparison of specifications and features

Seiko5 Sports GMT

SSK001

Seiko5 Sports

SRPE55

Key Differences

Best Value

Seiko 5 Sports (SRPE55)

Starting from $295

Slimmest

Seiko 5 Sports (SRPE55)

11.5mm thick

Price Comparison

Seiko 5 Sports GMT

MSRP

$400

New

$570

Used

$264

Seiko 5 Sports

MSRP

$295

Used

$236

MSRP New (Amazon) Used (eBay)

Comparison of Seiko 5 Sports GMT, Seiko 5 Sports
Specification	Seiko 5 Sports GMT	Seiko 5 Sports
Pricing
MSRP	$400	$295
New Price	$570	N/A
Used Price (Low)	$264	$236
Used Price (High)	$1,023	$2,526
30-Day Trend	↑ +3.2%	↑ +2.2%
Used Price Range	$264 - $1,023	$236 - $2,526
Identity
Reference	SSK001	SRPE55
Nickname	N/A	N/A
Style	Sports, Tool	Sports, Casual
Release Era	2020s	2010s
Dimensions
Diameter	42.5mm	40mm
Thickness	13.6mm	11.5mm
Lug Width	22mm	20mm
Lug to Lug	46mm	44.6mm
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	Hardlex
Water Resistance	100m (recreational diving)	100m (recreational diving)
Bezel	Bidirectional 24-hour	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

Which Should You Buy?

Seiko 5 Sports GMT and Seiko 5 Sports SRPE55 can look close on a spec sheet, yet the tradeoffs that matter most are usually wrist presence versus easier fit. They both touch the sports use case, so smaller spec differences can matter more than brand preference.

Bottom line

Seiko 5 Sports SRPE55 is the better everyday buy for most wrists because its smaller, simpler case wears more easily and costs less. Choose Seiko 5 Sports GMT only when its second-time-zone function is genuinely useful.

Editorial sources: seikowatches.com · seikowatches.com

Choose Seiko 5 Sports GMT when

Seiko 5 Sports GMT is a better fit for buyers who want more wrist presence, mechanical-watch enthusiasts, sports styling.

Choose Seiko 5 Sports SRPE55 when

Seiko 5 Sports SRPE55 is a better fit for smaller wrists, mechanical-watch enthusiasts, sports styling.

Key Differences

Movement and upkeep

Seiko 5 Sports GMT: automatic movement

Seiko 5 Sports SRPE55: 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 5 Sports GMT: 42.5mm · L2L 46mm · 161g

Seiko 5 Sports SRPE55: 40mm · L2L 44.6mm · 142g

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

Seiko 5 Sports GMT: 100m

Seiko 5 Sports SRPE55: 100m

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

Price and value

Seiko 5 Sports GMT: $400

Seiko 5 Sports SRPE55: $295

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 5 Sports GMT: sports

Seiko 5 Sports SRPE55: sports

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

Crystal and materials

Seiko 5 Sports GMT: Hardlex crystal · steel

Seiko 5 Sports SRPE55: Hardlex crystal · steel

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

Why These Watches Are Often Compared

Seiko 5 Sports GMT and Seiko 5 Sports SRPE55 get compared constantly because both are sports watches, they share the same automatic movement — so the spec sheet alone will not tell you which to buy.

The Differences You Will Notice in Daily Use

Seiko 5 Sports GMT is 161g and Seiko 5 Sports SRPE55 is 142g — a 19g gap is noticeable over a full day.
Lug-to-lug is 46mm on Seiko 5 Sports GMT and 44.6mm on Seiko 5 Sports SRPE55; that, more than case width, decides whether it overhangs a smaller wrist.
Feature split: Seiko 5 Sports GMT adds gmt; Seiko 5 Sports SRPE55 keeps it simpler.
Seiko 5 Sports GMT is 13.6mm thick and Seiko 5 Sports SRPE55 is 11.5mm — the slimmer one slides under a shirt cuff more easily.
Seiko 5 Sports GMT is around $400 and Seiko 5 Sports SRPE55 around $295 — about a $105 gap at typical listings.

Which One Is More Comfortable

Seiko 5 Sports SRPE55 — Seiko 5 Sports GMT is 161g and Seiko 5 Sports SRPE55 is 142g — a 19g gap is noticeable over a full day.

Which One Offers More Useful Features

Seiko 5 Sports GMT — Feature split: Seiko 5 Sports GMT adds gmt; Seiko 5 Sports SRPE55 keeps it simpler.

Which One Should You Buy

Sources: https://www.seikowatches.com/us-en/products/5sports/ssk001 · https://www.seikowatches.com/us-en/products/5sports/srpe55

Choose Seiko 5 Sports GMT If...

You need to track a second time zone with a mechanical watch.
You accept the larger case and busier bezel for GMT utility.
You prefer more dial presence and a larger case feel.

Choose Seiko 5 Sports SRPE55 If...

You want a compact, versatile everyday automatic.
You do not need GMT functionality and prefer a cleaner dial and bezel.
You want a smaller case footprint on the wrist.

Price and Value Notes

Seiko 5 Sports SRPE55 is often the value play at current pricing, while Seiko 5 Sports GMT 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 5 Sports GMT

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $387 · New & used listings

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Seiko 5 Sports

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $462 · New & used 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?

Seiko 5 Sports SRPE55 — it is 44.6mm lug-to-lug versus 46mm, and lug-to-lug is what decides whether a watch overhangs a smaller wrist.

Which is better for swimming or rough daily wear?

They are rated the same, so water resistance will not decide this. Choose on strap material and how much you mind scratching the case.

Is the more expensive one worth it?

Seiko 5 Sports SRPE55 is the value pick at roughly $105 less. Pay more only if a specific difference above matters to you — otherwise the cheaper one is the smarter buy. Confirm live listings, since marketplace pricing moves.

What is the actual difference between Seiko 5 Sports GMT and Seiko 5 Sports SRPE55?

Seiko 5 Sports GMT is 161g and Seiko 5 Sports SRPE55 is 142g — a 19g gap is noticeable over a full day. That is the difference you will notice day to day; the rest of the specs are close enough not to matter.

Which one should I buy?

Seiko 5 Sports SRPE55 for most buyers — Seiko 5 Sports GMT is 161g and Seiko 5 Sports SRPE55 is 142g — a 19g gap is noticeable over a full day. Go with Seiko 5 Sports GMT instead if you want gmt — Seiko 5 Sports GMT has it and Seiko 5 Sports SRPE55 does not.