Side by side

Formex Reef 42 mmvsYema Skin Diver Slim CMM.20

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

Reef 42 mm
FormexReef 42 mm
MSRP $2,414
Skin Diver Slim CMM.20
YemaSkin Diver Slim CMM.20
MSRP $2,117

At a glance

11 of 29 specs differ
Diameter
Reef 42 mm42mm
Skin Diver Slim CMM.2047mm
Power Reserve
Reef 42 mm56h
Skin Diver Slim CMM.2040h
Water Resistance
Reef 42 mm300m
Skin Diver Slim CMM.20200m
MSRP
Reef 42 mm$2,414
Skin Diver Slim CMM.20$2,117

Full specifications

Case

5 specs
Diameter
42mm
47mm
Thickness
11.4mm
10mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Steel
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
Yema CMM.20
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,414
$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.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

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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