Side by side

Boldr Expedition EnigmathvsYema Skin Diver Slim CMM.20

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

Expedition Enigmath
BoldrExpedition Enigmath
MSRP $599
Skin Diver Slim CMM.20
YemaSkin Diver Slim CMM.20
MSRP $2,117

At a glance

12 of 29 specs differ
Diameter
Expedition Enigmath41mm
Skin Diver Slim CMM.2047mm
Power Reserve
Expedition Enigmath42h
Skin Diver Slim CMM.2040h
Water Resistance
Expedition Enigmath200m
Skin Diver Slim CMM.20200m
MSRP
Expedition Enigmath$599
Skin Diver Slim CMM.20$2,117

Full specifications

Case

5 specs
Category
Tool
Diver
Diameter
41mm
47mm
Thickness
12.8mm
10mm
Lug-to-Lug
47.5mm
47mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Enigmath Coconino
Steel
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Miyota 9039,
Yema CMM.20
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$599
$2,117

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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.

Boldr Expedition Enigmath

The watch's slide rule function is a convenient feature, allowing for calculations on the go. One potential drawback is the use of the Japanese Miyota 9039 movement, which may be a trade-off for some buyers. Reviewers disagree on whether the quick 'on the fly' adjust bracelet is a more significant advantage than the watch's sapphire crystal for durability and scratch resistance.

Yema Skin Diver Slim CMM.20

Owners and reviewers widely praise the Yema Skin Diver Slim CMM.20 for its balanced 39mm case, vintage aesthetic, and unique champagne dial. The proprietary CMM.20 micro-rotor movement is a notable feature, though some owners report potential QC issues including erratic timegrapher readings and second-hand stutter. The lume is described as subdued, and while some find the "dragon scale" bracelet beautiful, others consider it generic. The price point is a hurdle for some, and the stamped clasp quality is considered subpar by one reviewer, with a gap noted by an owner. The lack of hacking seconds is flagged as a drawback at its price. Overall, owners and reviewers rate the Yema Skin Diver Slim CMM.20 highly for its vintage charm and balanced wearability.

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