Boldr Odyssey 40mmvsFormex Reef 39.5 mm
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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.

Odyssey 40mm

Reef 39.5 mm
Diameter
40mm
39.5mm
Lug-to-Lug
48mm
45.5mm
lowest
Thickness
12.5mm
11mm
lowest
Water Resistance
300m
300m
Power Reserve
42h
56h
highest
MSRP
$799
lowest
$2,230
Movement
Miyota 9075
Sellita SW300-1
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.
Owners praise Boldr for impressive specifications and value, with one owner noting the Odyssey Black Dragonfish has superior specs and movement compared to other models. A separate owner finds the Venture to be an exceptional value and versatile with strap changes. However, one owner feels the Venture's size is borderline for an 8-inch wrist. Overall, owners rate Boldr highly for its value and specifications.
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.
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