Spinnaker CroftvsYema Skin Diver CMM.20
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Croft

Skin Diver CMM.20
Diameter
40mm
39.5mm
Lug-to-Lug
47mm
47mm
Thickness
14mm
11.5mm
lowest
Water Resistance
150m
200m
highest
MSRP
$219
lowest
$2,372
Movement
Seiko NH35
Yema CMM.20
Case
3 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Spinnaker Croft is widely praised for its value and vibrant dial colors, with reviewers noting its versatility and sapphire crystal. Owners and reviewers alike point to the bracelet and clasp as areas with budget-friendly limitations, citing friction-fit pins, sharp edges, and a stamped clasp with a stiff security lock. On balance, owners and reviewers rate the Spinnaker Croft well for its strong value proposition and appealing aesthetics at its price point.
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.
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