Vaer DS4 Meridian SolarvsYema Superman Slim 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.

DS4 Meridian Solar

Superman Slim CMM.20
Diameter
42mm
39mm
Lug-to-Lug
46mm
n/a
Thickness
10.6mm
9.9mm
lowest
Water Resistance
200m
300m
highest
MSRP
$299
lowest
$2,372
Movement
Quartz
Yema CMM.20
Case
4 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Vaer DS4 Meridian Solar is widely praised for its excellent value, featuring a sapphire crystal with AR coating, serviceable Superluminova lume, and solar-powered functionality. Owners report it performs well as a daily beater, enduring significant wear and tear. Some owners find the included straps rough, and the steel bracelet is criticized for a jangly feel with sharp edges, as is the crown on some examples. The second hand's alignment between markers is noted as occasionally off, a trait Vaer attributes to normal quartz performance in this price range, and some examples show minor bezel misalignment. Overall, owners rate the Vaer DS4 Meridian Solar highly for its robust build and solar functionality at an accessible price point.
The Vaer DS4 Meridian Solar pairs a USA-assembled solar quartz movement with a matte blue dial offering strong legibility, delivering reliable everyday functionality across multiple case sizes (38mm and 42mm options). The watch combines 200m water resistance, scratch-resistant properties, and solid lume in an affordably priced package backed by a warranty.
Owners widely praise the Yema Superman Slim CMM.20's appealing retro design, 39mm case, and the in-house CMM.20 micro-rotor movement, with some specifically noting the fish scale bracelet. Reviewers and owners alike mention the movement's design can lead to a "jittery" seconds hand, though Yema states this does not impact performance. Some owners question the $2500 MSRP, finding it overpriced, while others note initial stiffness in the bracelet that improves with wear. Finishing inconsistencies were noted on a prototype, and the stamped clasp on the bracelet is considered subpar by one reviewer. Overall, owners and reviewers find the Yema Superman Slim CMM.20 a compelling option for its vintage styling and unique micro-rotor movement, despite some concerns about its value proposition and minor execution details.
The upgraded CMM.20 micro-rotor movement is a significant enhancement. Reviewers noted the slim profile and redesigned case. One reviewer indicated a significant flaw was discussed, but the nature of this imperfection was not specified.
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