Side by side

Seestern S450 Ocean StarvsSpinnaker Dumas Automatic

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

12 of 29 specs differ
Diameter
S450 Ocean Star40mm
Dumas Automatic44mm
Power Reserve
S450 Ocean Star41h
Dumas Automatic40h
Water Resistance
S450 Ocean Star100m
Dumas Automatic300m
MSRP
S450 Ocean Star$299
Dumas Automatic$239

Full specifications

Case

4 specs
Diameter
40mm
44mm
Thickness
12mm
15mm
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
White
Blue
Lume
Tritium
None

Movement

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

Pricing

1 specs
MSRP
$299
$239

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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 Dumas Automatic

Owners widely praise the Spinnaker Dumas Automatic for its attractive textured blue dial, applied indices, and well-finished case, noting its comfortable wearability due to a short lug-to-lug distance. Some owners flag the use of mineral crystal instead of sapphire and a bracelet with a learning curve and loose keeper. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetics and case finishing at its price point.

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