Formex Essence ThirtyNinevsSartory Billard SB04-E
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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

SB04-E
Diameter
39mm
39.5mm
Lug-to-Lug
45mm
lowest
46mm
Thickness
10mm
lowest
10.3mm
Water Resistance
100m
100m
Power Reserve
41h
68h
highest
MSRP
$2,390
lowest
$3,609
Movement
Sellita SW200-1
La Joux-Perret G101
Case
3 specsCrystal & Dial
3 specsMovement
3 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 widely praise the Sartory Billard SB04-E for its impressive and deep dials, with specific mentions of the 12 Soleil pattern and the Exquisite Blue Guilloché appearing to move like water in the light. Reviewers highlight its sensible 39.5mm size and 100m water resistance, noting the overall composition looks more expensive than its price. One owner points out slightly sharp edges on the caseback and suggests a more domed crystal. The watch utilizes the La Joux-Perret G101 automatic movement with a 68-hour power reserve. Overall, owners and reviewers rate the Sartory Billard SB04-E highly for its unique dial work and value proposition.
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