Side by side

Seiko Prospex SeavsFormex Stratos UTC

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

Prospex Sea
SeikoProspex Sea
MSRP $1,500
Stratos UTC
FormexStratos UTC
MSRP $4,663
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 Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

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 Sea43.5mm
Stratos UTC41mm
Power Reserve
Prospex Sea70h
Stratos UTC42h
Water Resistance
Prospex Sea200m
Stratos UTC100m
MSRP
Prospex Sea$1,500
Stratos UTC$4,663

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
43.5mm
41mm
Thickness
13.3mm
11.8mm
Lug-to-Lug
51mm
47mm
Lug Width
22mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Blue
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

3 specs
Caliber
6R35
ETA 2892
Power Reserve
70h
42h
Jewels
24
25

Pricing

1 specs
MSRP
$1,500
$4,663
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