Side by side

Seiko Prospex SeavsYema Superman 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
Superman Tourbillon CMM.31 Limited Edition
YemaSuperman Tourbillon CMM.31 Limited Edition
MSRP $13,000

At a glance

12 of 29 specs differ
Diameter
Prospex Sea42mm
Superman Tourbillon CMM.31 Limited Edition43mm
Power Reserve
Prospex Sea72h
Superman Tourbillon CMM.31 Limited Edition40h
Water Resistance
Prospex Sea300m
Superman Tourbillon CMM.31 Limited Edition300m
MSRP
Prospex Sea
Superman Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

4 specs
Diameter
42mm
43mm
Thickness
13.3mm
11.7mm
Lug-to-Lug
48.6mm
Lug Width
20mm
22mm

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Steel
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
6R54
Yema CMM.31 Tourbillon
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$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 widely praise the Seiko Prospex Sea for its excellent value, solid build, and comfortable wearability, with specific mentions of its matte black dial, excellent lume, and cushion case that wears smaller than its dimensions suggest. The 4R36 movement is noted for hacking and hand-winding capabilities, and the bezel action is described as smooth and precise. Some owners find the watch to be a legitimate tool with a fair price, while others describe it as big, thick, and heavy, uncomfortable for smaller wrists, though this is subjective as one owner found the size perfect. The solar quartz movement is also highlighted as a collection-worthy feature. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and comfortable, classic design.

Yema Superman Tourbillon CMM.31 Limited Edition

Owners praise the Yema Superman Tourbillon CMM.31 Limited Edition as an incredible and crazy watch, appreciating its unnecessary tourbillon complication and impressive specifications at a remarkable price point. The titanium construction contributes to comfort despite the 43mm case size. One reviewer notes the bracelet clasp's extension system is somewhat crude. On balance, owners and reviewers rate the Yema Superman Tourbillon CMM.31 Limited Edition highly for its compelling tourbillon feature at an accessible price.

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