Jack Mason Ellum Manual WindvsSternglas Naos Pro Automatik
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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.

Ellum Manual Wind

Naos Pro Automatik
Diameter
38mm
38mm
Lug-to-Lug
45mm
42.4mm
lowest
Thickness
9mm
9mm
Water Resistance
50m
50m
Power Reserve
42h
42h
MSRP
$799
$699
lowest
Movement
Sellita SW210-1
Miyota 9015
Case
1 specsCrystal & Dial
1 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Jack Mason Ellum Manual Wind is widely praised for its elegant, contemporary dress watch design, featuring a unique linen-textured dial and slim 38mm case. Owners and reviewers consistently highlight the dial's beauty and the watch's refined aesthetic, with some noting its mid-century inspiration. The Sellita SW210-1 manual-wind movement is regulated to ±5 seconds per day, and the watch is available for $799 to $949. Some owners find the date window detracts from the dial's design, and one reviewer notes the red, white, and blue seconds hand as a potentially distracting accent. On balance, owners and reviewers rate the Jack Mason Ellum Manual Wind highly for its beautiful dial and slim case at the price.
The Sternglas Naos Pro Automatik is praised for its slim, wearable 38mm case with a mix of brushed and polished finishes and a refined Bauhaus dial design. Reviewers note the upgraded Miyota 9015 movement and improved wearability. Some find the optional five-link bracelet too chunky and lacking refinement, with one reviewer noting its accuracy of -10/+30 seconds per day is not for precision enthusiasts. On balance, reviewers rate the Sternglas Naos Pro Automatik highly for its slim case and refined dial design at its price point.
The Bauhaus design is a strength. The value proposition is a weakness.
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