Hamilton Jazzmaster Performer AutomaticvsKnot Watches AT-38


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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.

Jazzmaster Performer Automatic

AT-38
Diameter
38mm
38mm
Thickness
11.5mm
10mm
lowest
Water Resistance
100m
highest
50m
Power Reserve
80h
highest
45h
MSRP
$1,245
$444
lowest
Movement
Hamilton H-10
Miyota 9015
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.
Owners widely praise the Hamilton Jazzmaster Performer Automatic for its clean look, comfort, and stylish design, with one owner noting accuracy averaging just over 2 seconds per day. The 38mm case size is generally considered wearable, though one owner found the 34mm variant too small. A common point of contention among enthusiasts is a dislike for open-heart designs, which some find cluttered. One owner reported an internal movement failure causing the time to jump back, which was resolved through service. On balance, owners and reviewers rate the Hamilton Jazzmaster Performer Automatic highly for its comfort and attractive design at its price point.
Knot Watches Knot AT-38 owners praise its 38mm case size, 10mm case height, and 45mm lug-to-lug as fitting perfectly on smaller wrists, with one owner finding it surprisingly light and comfortable. The multi-layered Urushi lacquer dial, featuring gold applied via scraping, is described as stunning in person and a key aesthetic appeal, while the Miyota 9015 movement is considered good. Some owners note that Knot straps are too short for larger wrists and the strap width is slightly smaller than standard, preventing the use of preferred aftermarket options. On balance, owners rate the Knot Watches Knot AT-38 highly for its comfortable dimensions and the striking dial design at its price point.
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