WatchDecoded

Seiko › GMT › Seiko 5 Sports › SSK023

Seiko SSK023

Also covers SSK059, SSK025: the same watch in other colors or straps.

Seiko 5 Sports · Field series. Sold new

Video reviews

The New Most Attainable GMT From Seiko - Seiko 5 Field GMT SSK023 & SSK025
Teddy Baldassarre · YouTube
The New Seiko 5 Sports Field GMT SSK023 Hands On - Automatic Explorer Style GMT under $400?
WatchChris · YouTube

Videos are made by independent reviewers and play from YouTube; they’re not ours. We picked ones that name this reference. Own one? Share your photos.

What reviewers agree on

Liked
  • Good value for a travel watch with a second time zone
  • Compact 39.4 mm case that suits smaller wrists
Worth knowing
  • Same "caller" GMT as the SSK001: the local hour hand can't be set on its own
  • Bracelet and clasp feel light for the price

Our summary of points that come up in more than one review, in our own words. Read the originals: Teddy Baldassarre, WatchesbySJX.

Where to buy

New · authorized

Seiko’s own warranty.

New · grey market (unauthorized)

Often cheaper. Covered by the store’s own warranty, not Seiko’s.

Pre-owned

Check condition, box and papers. Usually no warranty.

Search links show live listings, so check the exact reference before you buy. Prices change; each one shows when we checked it. We may earn a commission from some links. It doesn’t change your price or which stores we list. Authorized vs grey market vs pre-owned.

Colors and versions (3)

Same case, movement and size; the versions differ in dial color, bezel or strap. Each reference number below is a separate model you can search for.

ReferenceComes onPriceStatusLook at it / buy
SSK023—$450Sold newSee it at Seiko · eBay · Jomashop
SSK059—$450Sold newSee it at Seiko · eBay · Jomashop
SSK025Leather strap$435Sold newSee it at Seiko · eBay · Jomashop

The basics

Price
$450
Seiko US list, 2026-10-23
Size
39.4 mm × 13.6 mm
47.9 mm lug to lug
Strap width
20 mm
Any 20 mm strap fits
Water resistance
100 m
Sapphire crystal
No
Curved Hardlex
Lume
Hands and markers
Screw-down crown
Not listed by Seiko
Will it fit my wrist?

Rough rule of thumb from lug-to-lug length (47.9 mm), not a promise. Wrist shape matters; try one on if you can.

How it works day to day

Movement
Automatic, hand-winding
Caliber 4R34
Bezel
No rotating bezel listed
Hacking seconds
Yes
Seconds hand stops when you pull the crown, so you can set the time exactly
Hand-winding
Yes
Power reserve
About 41 hours

Similar watches

Sources