Side by side

Seiko 5 Sports SKX seriesvsFormex Stratos UTC

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

5 Sports SKX series
Seiko5 Sports SKX series
MSRP $350
Stratos UTC
FormexStratos UTC
MSRP $4,663

At a glance

11 of 29 specs differ
Diameter
5 Sports SKX series38mm
Stratos UTC41mm
Power Reserve
5 Sports SKX series41h
Stratos UTC42h
Water Resistance
5 Sports SKX series100m
Stratos UTC100m
MSRP
5 Sports SKX series$350
Stratos UTC$4,663

Full specifications

Case

4 specs
Category
Diver
GMT
Diameter
38mm
41mm
Thickness
12.1mm
11.8mm
Lug-to-Lug
44.2mm
47mm

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Dial Color
Black
Blue
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

3 specs
Caliber
4R36
ETA 2892
Power Reserve
41h
42h
Jewels
24
25

Pricing

1 specs
MSRP
$350
$4,663

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko 5 Sports SKX series

The Seiko 5 Sports SKX series is widely praised for its value, robust build, and powerful lume, with owners appreciating its comfortable bracelets and improved movement featuring hacking and hand-winding. Some owners find the original SKX models heavy and bulky, while others praise their ruggedness and iconic dive watch design. Reviewers note the 38mm models offer great value at around €350 and are exemplary gateway watches, though their 100m water resistance without a screw-down crown makes them unsuitable for diving. The Seiko 5 Sports SKX series is seen as a decent watch, especially under £200, but lacks the tool watch capabilities of the original SKX, missing a screw-down crown, bezel pip, and ISO rating. On balance, owners and reviewers rate the Seiko 5 Sports SKX series well for its blend of value, improved movement, and tool-watch aesthetic, despite some missing dive certifications.

Formex Stratos UTC

Owners and reviewers widely praise the Formex Stratos UTC for its user-friendly flyer GMT complication, which utilizes pushers for time-zone adjustments, and its slim 11.8mm case. The watch is noted for its intricate, hand-finished case with a multi-layer construction and excellent finishing, along with a unique two-level case design. The Dubois-Depraz module on an ETA 2892 movement is a highlight, with accuracy figures ranging from +/- 5 to +/- 7 seconds per day. However, some find the dial busy with multiple typefaces and the overall design too complex or "plug ugly," with the price near €4000 considered high by some for a newer brand. Overall, owners and reviewers rate the Formex Stratos UTC highly for its innovative GMT functionality and excellent case finishing at its price point.

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