Side by side

Seiko Prospex SPEEDTIMERvsYema Superman Tourbillon CMM.31 Limited Edition

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

Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725
Superman Tourbillon CMM.31 Limited Edition
YemaSuperman Tourbillon CMM.31 Limited Edition
MSRP $13,000

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER39mm
Superman Tourbillon CMM.31 Limited Edition43mm
Power Reserve
Prospex SPEEDTIMER40h
Superman Tourbillon CMM.31 Limited Edition40h
Water Resistance
Prospex SPEEDTIMER100m
Superman Tourbillon CMM.31 Limited Edition300m
MSRP
Prospex SPEEDTIMER$725
Superman Tourbillon CMM.31 Limited Edition$13,000

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
39mm
43mm
Thickness
13.3mm
11.7mm
Lug-to-Lug
45.5mm
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Steel
Lume
LumiBrite on hands and index(es)
None

Movement

2 specs
Caliber
V192
Yema CMM.31 Tourbillon
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$725
$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 SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's gorgeous, unique red dial and vintage-inspired design, finding it a sturdy and reliable everyday watch. Some owners, however, question the value proposition at around $700 for a solar quartz model, citing its 13-15mm thickness and the 24-hour subdial as drawbacks. Accuracy figures vary, with one owner reporting +1/+2 seconds per day, while another notes the V192 solar movement offers a six-month power reserve. Overall, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and versatile chronograph, with its striking dial and everyday wearability being the most frequently cited strengths.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.

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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