Formex Essence ThirtyNinevsJack Mason Canton Salt
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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.

Essence ThirtyNine

Canton Salt
Diameter
39mm
39mm
Lug-to-Lug
45mm
lowest
46mm
Thickness
10mm
lowest
10.8mm
Water Resistance
100m
150m
highest
Power Reserve
41h
68h
highest
MSRP
$2,390
$1,199
lowest
Movement
Sellita SW200-1
La Joux-Perret G100
Case
4 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Formex Essence ThirtyNine is widely praised for its build quality and value, featuring a patented case suspension system for comfort and protection. Reviewers note its 39mm case with a 10mm thickness and 45mm lug-to-lug distance, housing a COSC-certified Sellita SW200-1 movement. It includes a tool-free strap quick-release system and a patented micro-adjusting bracelet for comfort, with pricing around $1,280-$1,390. One minor inconvenience noted is the clasp's specific closing order. Overall, owners and reviewers rate the Formex Essence ThirtyNine highly for its comfortable wearability and excellent value proposition.
The case suspension system enhances comfort and the COSC-certified movement is a strong feature. The bracelet exhibits noticeable rattle. Reviewers disagreed on the ideal case size, with some preferring the 39mm and others the 41mm.
Owners and reviewers widely praise the Jack Mason Canton Salt for its high-quality finishing, textured dials, and the La Joux-Perret G100 automatic movement. The 39mm case is noted as slim and comfortable, with a hard-coated finish and a well-finished Oyster-style bracelet featuring toolless micro-adjustment. Some owners find the case proportions stubby and the design uninspired, while others appreciate the versatility of the white dial and the overall feel and finishing, comparing it favorably to brands like Longines and Christopher Ward. A less secure micro-adjustment system on the clasp and overly tight Loctite on bracelet screws are noted criticisms. On balance, owners and reviewers rate the Jack Mason Canton Salt highly for its impressive finishing and movement at its price point.
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