ProTek Watches Model PT3103vsYema 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.

Model PT3103

Superman Slim CMM.20
Diameter
40mm
39mm
Thickness
11mm
9.9mm
lowest
Water Resistance
100m
300m
highest
MSRP
$550
lowest
$2,372
Movement
Quartz
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 ProTek Watches Model PT3103 is praised for its comfortable 40mm wearability and durable titanium case, with owners noting excellent tritium illumination. One owner reported a discounted price of $552. The quartz movement, while acknowledged as not horologically significant, is noted for its reliability. A reviewer wished for a screw-down crown and a minute hand that reached the minute track. Overall, owners and reviewers rate the ProTek Watches Model PT3103 highly for its durable construction and excellent tritium lume at the price point.
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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