STEELDIVE SD1906SvsYema Navygraf CMM.10
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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.

SD1906S

Navygraf CMM.10
Diameter
39mm
39mm
Lug-to-Lug
49mm
46mm
lowest
Thickness
12.5mm
11mm
lowest
Water Resistance
200m
highest
100m
MSRP
$128
lowest
$1,899
Movement
Seiko NH35
Yema CMM.10
Case
5 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the STEELDIVE SD1906S as an exceptional value, with its case finishing noted as surprisingly good for the price, featuring superior linear brushing on the case back. The watch is frequently cited as a favorite everyday wear, with one owner reporting successful dives to 100 meters without issue. Lume is consistently highlighted as excellent, lasting all night. Some owners report issues with bracelet quality, specifically a poorly applied logo, leading them to swap it for a strap, while others have experienced component failures like bezel inserts popping out or bent crown shafts on different models. The glossy dial is noted as making photography challenging. Overall, owners rate the STEELDIVE SD1906S highly for its impressive build quality and lume at its price point.
Owners widely report quality control concerns and suspect craftsmanship with the Yema Navygraf, with one user noting crooked text. A reviewer praised the Slim CMM.20 Limited Edition for its stylish, slim profile and classy finishing on a black lacquered enamel dial, though the audible micro-rotor spinning at its price point was a surprise. On balance, the consensus is that while the Yema Navygraf offers a stylish design, potential buyers should be aware of reported quality control issues.
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