Formex Essence ThirtyNinevsFrederique Constant Manufacture Classic Power Reserve Big Date
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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

Manufacture Classic Power Reserve Big Date
Diameter
39mm
40mm
Lug-to-Lug
45mm
n/a
Thickness
10mm
lowest
12.2mm
Water Resistance
100m
highest
50m
Power Reserve
41h
n/a
MSRP
$2,390
lowest
$5,295
Movement
Sellita SW200-1
Frederique Constant FC-735
Case
5 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.
The Frederique Constant Manufacture Classic Power Reserve Big Date is widely praised as an accessible entry into in-house movements and complications, featuring a clean 40mm polished case. Owners and reviewers highlight its accomplished, asymmetric dial design with a useful big date, moon phase, and power reserve indicator, all powered by the automatic FC-735 caliber. Some reviewers note the movement finishing as adequate rather than exceptional, and one owner finds the power reserve slightly out of place on a dress watch. The watch is available for EUR 4,795 for steel models. Overall, owners and reviewers rate the Frederique Constant Manufacture Classic Power Reserve Big Date highly for offering significant watchmaking and complications at its price point.
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