Side by side

Seiko Prospex LX linevsFormex Stratos UTC

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

What people say

Owners + reviewers, side by side

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

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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.

At a glance

14 of 29 specs differ
Diameter
Prospex LX line44.8mm
Stratos UTC41mm
Power Reserve
Prospex LX line72h
Stratos UTC42h
Water Resistance
Prospex LX line200m
Stratos UTC100m
MSRP
Prospex LX line$5,500
Stratos UTC$4,663

Full specifications

Case

6 specs
Diameter
44.8mm
41mm
Thickness
14.7mm
11.8mm
Lug-to-Lug
50.9mm
47mm
Lug Width
22mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Dial Color
Blue
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

4 specs
Caliber
Seiko 5R66
ETA 2892-A2
Type
Spring Drive
Automatic
Power Reserve
72h
42h
Jewels
30
0

Pricing

1 specs
MSRP
$5,500
$4,663
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