Side by side

Seestern S450 Ocean StarvsSpinnaker Croft 39 GMT

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Croft 39 GMT
SpinnakerCroft 39 GMT
MSRP $445

At a glance

12 of 29 specs differ
Diameter
S450 Ocean Star40mm
Croft 39 GMT39mm
Power Reserve
S450 Ocean Star41h
Croft 39 GMT40h
Water Resistance
S450 Ocean Star100m
Croft 39 GMT100m
MSRP
S450 Ocean Star$299
Croft 39 GMT$445

Full specifications

Case

4 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12mm
13mm
Lug-to-Lug
48mm
47mm

Crystal & Dial

2 specs
Dial Color
White
Red
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
Seiko NH34A
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$445

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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.

Spinnaker Croft 39 GMT

Owners praise the Spinnaker Croft 39 GMT for its colorful design, NH34 GMT movement, and reasonable price, noting high-standard manufacturing on the case, bezel, and bracelet. One owner finds the 43mm case and 51mm lug-to-lug dimensions too large for the design, preferring a 39-40mm case size. A potential issue with the lume was noted by one user. On balance, owners value the Spinnaker Croft 39 GMT for its attractive design and build quality at its price point, though sizing is a point of contention for some.

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