Side by side

Seestern S450 Ocean StarvsSeiko Prospex Land Seiko Boutique exclusive model

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

16 of 29 specs differ
Diameter
S450 Ocean Star40mm
Prospex Land Seiko Boutique exclusive model38mm
Power Reserve
S450 Ocean Star41h
Prospex Land Seiko Boutique exclusive model70h
Water Resistance
S450 Ocean Star100m
Prospex Land Seiko Boutique exclusive model200m
MSRP
S450 Ocean Star$299
Prospex Land Seiko Boutique exclusive model$875

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
40mm
38mm
Thickness
12mm
12.9mm
Lug-to-Lug
48mm
46.2mm
Lug Width
20mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
Tritium
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
TMI NH35A
6R35
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
70h
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$875

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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.

Seiko Prospex Land Seiko Boutique exclusive model

The Seiko Prospex Land is widely praised for its attractive and legible tool watch design, offering solid build quality at a fair price. Reviewers note the smooth operation of its internal rotating bezel, while owners highlight the satisfying, smooth, and precise bidirectional bezel action. The steel case is described as having a durable look with decent finishing. On balance, owners and reviewers rate the Seiko Prospex Land highly for its attractive, legible design and solid build quality at a fair price.

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