Formex Reef 39.5 mmvsSeiko 62MAS

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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.

Formex Reef 39.5 mm at true scale

Reef 39.5 mm

Seiko 62MAS at true scale

62MAS

Diameter

39.5mm

40.5mm

Lug-to-Lug

45.5mm

lowest

47.6mm

Thickness

11mm

lowest

13.2mm

Water Resistance

300m

highest

200m

Power Reserve

56h

70h

highest

MSRP

$2,230

$1,200

lowest

Movement

Sellita SW300-1

Seiko 6R35

Case

5 specs
Diameter
39.5mm
40.5mm
Thickness
11mm
13.2mm
Lug-to-Lug
45.5mm
47.6mm
Lug Width
22mm
20mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Bahama Blue
n/a
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW300-1
Seiko 6R35
Power Reserve
56h
70h
Jewels
0
24

Pricing

1 specs
MSRP
$2,230
$1,200
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Reviews

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, 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.

Seiko 62MAS

Owners widely praise the Seiko 62MAS for its beautiful vintage-inspired finishing, crisp bezel action, and overall build quality, with many appreciating its comfortable 40.5mm case and slim apparent height. Some owners report accuracy issues with the 6R movement, while others find it runs within specifications, and opinions are split on whether the 40mm size is too large for smaller wrists, with some noting it can wear top-heavy. The price point is considered high by some, though others deem it fair for a new watch. Overall, owners and reviewers rate the Seiko 62MAS highly for its faithful recreation of the original design and refined modern interpretation.

From video reviewers

The 37.5mm-38mm case size is a significant strength, offering a historically accurate and comfortable fit. Reviewers did not agree on any specific weaknesses.

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