Christopher Ward C1 Jump Hour Mk VvsFormex Essence ThirtyNine

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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.

C1 Jump Hour Mk V

Essence ThirtyNine
Diameter
39mm
39mm
Lug-to-Lug
47.3mm
45mm
lowest
Thickness
14mm
10mm
lowest
Water Resistance
30m
100m
highest
Power Reserve
41h
41h
MSRP
$3,095
$2,390
lowest
Movement
Sellita SW200-1
Sellita SW200-1
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.
Owners and reviewers praise the Christopher Ward C1 Jump Hour Mk V for its distinctive JJ01 jumping hour complication and the layered, textured dial design that plays with light. The watch features a 39mm stainless steel case with a mix of brushed and polished finishes, a tall box sapphire crystal, and a sapphire minute hand with a lumed underside for legibility. Some sources note a 14mm thickness and an accuracy of approximately ±20 seconds per day, with a 38-hour power reserve. Overall, the consensus is that the Christopher Ward C1 Jump Hour Mk V is a visually striking and well-finished watch, particularly for its unique complication and dial execution.
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.
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