Circula Watches AquaSport GMTvsYema 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.

AquaSport GMT

Skin Diver CMM.20
Diameter
40mm
39.5mm
Lug-to-Lug
46mm
lowest
47mm
Thickness
12.6mm
11.5mm
lowest
Water Resistance
200m
200m
Power Reserve
56h
n/a
MSRP
n/a
$2,372
Movement
Sellita SW330-2
Yema CMM.20
Case
4 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Circula Watches Taucheruhren von CiRCULA for its exceptional quality and value for the price, with many citing its robust construction, including hardened stainless steel and strong anti-magnetic technology. Some owners find the watch comfortable and well-suited for smaller wrists, appreciating the clean dial and the inclusion of bonus accessories like extra straps and tools. One owner noted the Sellita SW330-2 movement as a strong point at this price. However, one owner found the lug-to-lug length too long and the watch too heavy for all-day wear, preferring a different size. Overall, owners rate the Circula Watches Taucheruhren von CiRCULA highly for its impressive build quality and value proposition.
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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