Hamilton Jazzmaster Thinline AutovsSeagull Extraordinary Series Snowflake Dial Ultra-thin Dress Watch 40mm

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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 Thinline Auto

Extraordinary Series Snowflake Dial Ultra-thin Dress Watch 40mm
Diameter
40mm
40mm
Lug-to-Lug
n/a
48mm
Thickness
8.4mm
lowest
9mm
Water Resistance
50m
50m
Power Reserve
42h
42h
MSRP
$1,145
$788
lowest
Movement
ETA 2892-A2
ST18
Case
2 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Hamilton Jazzmaster Thinline Auto is widely praised for its gorgeous, stunning, and captivating dials, particularly the champagne and burgundy variants, and its thin, comfortable, vintage-inspired design that fits well under shirt cuffs. Owners appreciate its clean, simple aesthetic, often noting the beauty of its applied indices and dauphine hands, and the slim profile afforded by its movement. Some users find the absence of a second hand liberating for quick setting and avoiding accuracy checks. However, opinions are mixed on its thinness, with some finding it too thin for their preference. The ETA 2892-A2 movement's rotor noise is noted by several owners as audible due to the thin case, and the winding feel is described by one owner as unrefined. The small crown is also flagged as difficult to manipulate, and the OEM strap is disliked by one owner. One source mentions the polished case may show light swirlies.
The slim case profile and affordable price point are consistently praised. Reviewers noted the absence of a second hand.
Owners widely praise the Seagull Extraordinary Series Snowflake Dial Ultra-thin Dress Watch 40mm for its classy aesthetic and wearability, with one owner noting its 47mm lug-to-lug measurement allows it to wear smaller than many other 40mm watches. The ST18 automatic movement is described as "really really good looking," and the dial receives high marks. Accuracy for one owner's watch averaged +7.1 seconds per day, with a power reserve of 45.4 hours after 30 manual winds. Some owners find the included NATO straps and aftermarket leather strap less luxurious. Overall, owners rate the Seagull Extraordinary Series Snowflake Dial Ultra-thin Dress Watch 40mm highly for its elegant dial and comfortable wearability.
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