Which is cheaper, the Formex Reef 39.5 mm or the Boldr Venture?

At MSRP the Boldr Venture is the cheaper of the two at $339, against $2,230 for the Formex Reef 39.5 mm — a $1,891 gap before any retailer discounting.

Which is bigger, the Formex Reef 39.5 mm or the Boldr Venture?

The Formex Reef 39.5 mm wears larger at 39.5mm versus 38mm for the Boldr Venture — a 1.5mm difference across the dial.

Which has better water resistance, the Formex Reef 39.5 mm or the Boldr Venture?

The Formex Reef 39.5 mm is rated to 300m versus 200m for the Boldr Venture.

Which has a longer power reserve, the Formex Reef 39.5 mm or the Boldr Venture?

The Formex Reef 39.5 mm carries a 56-hour power reserve against 40 hours on the Boldr Venture.

What movement does the Formex Reef 39.5 mm run compared to the Boldr Venture?

Both watches run automatic movements — the Formex Reef 39.5 mm uses the Sellita SW300-1 and the Boldr Venture uses the Seiko NH35A.

Side by side

Formex Reef 39.5 mmvsBoldr Venture

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Formex Reef 39.5 mm

reef-39.5-automatic-chronometer-cosc-300m-bahama-blue

MSRP $2,230

Boldr Venture

venture-black-dawn

MSRP $339

At a glance

12 of 29 specs differ

Diameter

Reef 39.5 mm39.5mm

Venture38mm

Power Reserve

Reef 39.5 mm56h

Venture40h

Water Resistance

Reef 39.5 mm300m

Venture200m

MSRP

Reef 39.5 mm$2,230

Venture$339

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

Bahama Blue

Black Dawn

Movement

2 specs

Caliber

Sellita SW300-1

Seiko NH35A

Power Reserve

56h

40h

Pricing

1 specs

MSRP

$2,230

$339

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

The Boldr Venture is widely praised for its lightweight and durable titanium case, excellent finishing, and comfortable wearability, with owners noting its legibility and good lume on the navy dial. It features a scratch-resistant sapphire crystal and 200m water resistance, making it suitable for daily wear. The included Expedition Canvas Strap is described as beautiful and comfortable. Overall, owners rate the Boldr Venture highly for its comfortable and durable titanium construction and excellent legibility.

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