Side by side

Seestern S450 Ocean StarvsFormex Stratos UTC

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Stratos UTC
FormexStratos UTC
MSRP $4,663

At a glance

13 of 29 specs differ
Diameter
S450 Ocean Star40mm
Stratos UTC41mm
Power Reserve
S450 Ocean Star41h
Stratos UTC42h
Water Resistance
S450 Ocean Star100m
Stratos UTC100m
MSRP
S450 Ocean Star$299
Stratos UTC$4,663

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
40mm
41mm
Thickness
12mm
11.8mm
Lug-to-Lug
48mm
47mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
Dial Color
White
Blue
Lume
Tritium
Super-LumiNova

Movement

5 specs
Caliber
TMI NH35A
ETA 2892
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
42h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$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.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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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