Side by side

Seiko Prospex SeavsYema Superman Titanium Tourbillon CMM.31 Limited Edition

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

Prospex Sea
SeikoProspex Sea
MSRP $595
Superman Titanium Tourbillon CMM.31 Limited Edition
YemaSuperman Titanium Tourbillon CMM.31 Limited Edition
MSRP $13,000

At a glance

13 of 29 specs differ
Diameter
Prospex Sea41.7mm
Superman Titanium Tourbillon CMM.31 Limited Edition43mm
Power Reserve
Prospex Sea41h
Superman Titanium Tourbillon CMM.31 Limited Edition40h
Water Resistance
Prospex Sea200m
Superman Titanium Tourbillon CMM.31 Limited Edition300m
MSRP
Prospex Sea$595
Superman Titanium Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

6 specs
Diameter
41.7mm
43mm
Thickness
12.3mm
11.7mm
Lug-to-Lug
49.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal
Hardlex
Domed Sapphire
Dial Color
Black
Titanium
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
4R35
Yema CMM.31 Tourbillon
Power Reserve
41h
40h
Jewels
23
25

Pricing

1 specs
MSRP
$595
$13,000

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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.

Seiko Prospex Sea

Owners and reviewers widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many noting its comfortable wearability and faithful design recreations. Some owners report the watch can feel big, thick, and heavy on smaller wrists, while others find the sizing perfect. The bezel action is frequently highlighted as smooth and precise, often exceeding that of less expensive models. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its impressive finishing and value proposition.

Yema Superman Titanium Tourbillon CMM.31 Limited Edition

The Yema Superman Titanium Tourbillon CMM.31 Limited Edition is noted for its in-house titanium tourbillon movement offering a 105-hour power reserve and 200m water resistance, alongside a unique asphalt-grained dial. Owners find the 43mm size wearable, with one describing it as a contradictory "toolwatch" with exceptional movement craftsmanship. A reviewer flags the bracelet clasp's extension system as crude. On balance, owners and reviewers highlight the impressive movement and dial as key strengths of the Yema Superman Titanium Tourbillon CMM.31 Limited Edition.

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