Formex Reef 39.5 mmvsSeiko Captain Willard
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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.

Reef 39.5 mm

Captain Willard
Diameter
39.5mm
42.7mm
Lug-to-Lug
45.5mm
lowest
46.6mm
Thickness
11mm
lowest
13.2mm
Water Resistance
300m
highest
200m
Power Reserve
56h
70h
highest
MSRP
$2,230
$1,300
lowest
Movement
Sellita SW300-1
Seiko 6R35
Case
5 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Formex Reef 39.5 mm is widely praised for its refined finishing, improved proportions, and compelling value under €2,000. Owners and reviewers highlight its comfortable wearability on smaller wrists, unique aesthetic, and impressive specifications including 300m water resistance and a COSC-certified Sellita SW300-1 movement. Some note the 22mm lug width feels slightly disproportionate and the bracelet could benefit from more taper. A prototype crown protrusion issue is expected to be resolved in production. Overall, owners rate the Formex Reef 39.5 mm highly for its excellent build quality and tool-like features at its price point.
The Seiko Captain Willard is praised for its supremely wearable 42.7mm case, icy white textured dial, and bright LumiBrite lume, with reviewers noting impressive finishing and value over $1,000. Some models feature a unique azurage textured navy blue bezel insert, while others have a matte grey or unidirectional bezel with cream accents. The Seiko Captain Willard houses the 6R35 automatic movement with a 70-hour power reserve and 200m water resistance, though one reviewer questions if its performance specs match its price. Overall, owners and reviewers rate the Seiko Captain Willard highly for its comfortable slim profile and excellent LumiBrite lume at its price point.
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