Side by side

Seiko 5 Sports Field seriesvsFormex Stratos UTC

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

5 Sports Field series
Seiko5 Sports Field series
MSRP $450
Stratos UTC
FormexStratos UTC
MSRP $4,663

At a glance

11 of 29 specs differ
Diameter
5 Sports Field series39.4mm
Stratos UTC41mm
Power Reserve
5 Sports Field series41h
Stratos UTC42h
Water Resistance
5 Sports Field series100m
Stratos UTC100m
MSRP
5 Sports Field series$450
Stratos UTC$4,663

Full specifications

Case

3 specs
Diameter
39.4mm
41mm
Thickness
13.6mm
11.8mm
Lug-to-Lug
47.9mm
47mm

Crystal & Dial

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

Movement

3 specs
Caliber
4R34
ETA 2892
Power Reserve
41h
42h
Jewels
24
25

Pricing

1 specs
MSRP
$450
$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 Field series

The Seiko 5 Sports Field series offers an accessible explorer-style watch with a 41mm stainless steel case, 100m water resistance, and a Hardlex crystal. The Field GMT model features a caller GMT complication powered by the 4R34 movement, while the standard Field models use the 4R36 with a 41-hour power reserve. Both models include Arabic numerals coated in LumiBrite and a lumed pearl on the bezel. On balance, the Seiko 5 Sports Field GMT is a well-regarded entry-level explorer watch for its price point, despite its office-style GMT function.

From video reviewers

The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.

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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