Side by side

Seestern S450 Ocean StarvsYema YEMA x Silberstein Marine 2 CMM.20 Limited Edition

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
YEMA x Silberstein Marine 2 CMM.20 Limited Edition
YemaYEMA x Silberstein Marine 2 CMM.20 Limited Edition
MSRP $4,425

At a glance

13 of 29 specs differ
Diameter
S450 Ocean Star40mm
YEMA x Silberstein Marine 2 CMM.20 Limited Edition40mm
Power Reserve
S450 Ocean Star41h
YEMA x Silberstein Marine 2 CMM.20 Limited Edition40h
Water Resistance
S450 Ocean Star100m
YEMA x Silberstein Marine 2 CMM.20 Limited Edition200m
MSRP
S450 Ocean Star$299
YEMA x Silberstein Marine 2 CMM.20 Limited Edition$4,425

Full specifications

Case

4 specs
Thickness
12mm
11mm
Lug-to-Lug
48mm
44.5mm
Material
316L Stainless Steel
Titanium (DLC coated)
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
White
Red
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
Yema CMM.20
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$4,425

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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.

YEMA x Silberstein Marine 2 CMM.20 Limited Edition

The YEMA x Silberstein Marine 2 CMM.20 Limited Edition is noted for its slim 39mm case and in-house CMM.20 micro-rotor movement, offering 300 meters of water resistance and a 70-hour power reserve. Reviewers highlight the watch's thin profile and flowing case design, as well as its black lacquered enamel dial. However, the bezel's lack of numbers is considered a practical drawback, and one reviewer noted the audible spin of the micro-rotor, which was unexpected given the €1,990 price for the 200-piece limited edition. The included leather strap is also seen as less suited for the watch's dive capabilities. Overall, reviewers appreciate the YEMA x Silberstein Marine 2 CMM.20 Limited Edition for its slim design and in-house movement, though practical considerations regarding the bezel and strap are noted.

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