DIFICIANO NarwhalvsYema Skin Diver CMM.20
lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Narwhal

Skin Diver CMM.20
Diameter
38mm
39.5mm
Lug-to-Lug
48mm
47mm
lowest
Thickness
14.2mm
11.5mm
lowest
Water Resistance
300m
highest
200m
MSRP
$419
lowest
$2,372
Movement
Seiko NH35
Yema CMM.20
Case
5 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The DIFICIANO Narwhal is praised for its quiet operation and effective mopping, with owners noting COSC-level timekeeping and a $390 launch price seen as good value. However, some owners report connectivity issues and problems with the mapping feature, leading to a recommendation against purchase at full price, while others find the app and robot impressive. One owner finds the 38mm case appears too large for smaller wrists and notes the dial version quickly sold out. On balance, owners are split on the DIFICIANO Narwhal, with its value proposition tempered by reported connectivity and mapping issues for some.
The Yema Skin Diver CMM.20 is lauded for its vintage aesthetic, 39.5mm case size, and well-proportioned handset with sharp indices. Owners praise its textured cream dial, French tool watch elegance, and the smooth winding feel of the in-house CMM.20 micro-rotor movement. The fully brushed bracelet with toolless micro-adjust clasp is considered Yema's best yet. Accuracy readings range from -3/+7 seconds per day to approximately 0 to -10 seconds per day. Some reviewers noted questionable finishing on a prototype's hour hand and a rattly, stamped clasp. The watch's pricing has been questioned by some due to brand QC reputation, and its extended lug-to-lug may challenge smaller wrists. On balance, owners and reviewers appreciate the Yema Skin Diver CMM.20 for its vintage styling and improved bracelet design at its price point.
The sapphire bezel insert and in-house CMM.20 movement are noted strengths. Reviewers questioned the value proposition compared to other Yema models.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.









