Side by side

Formex Reef 39.5 mmvsSeiko Presage Classic Series

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

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
Presage Classic Series
SeikoPresage Classic Series
MSRP $1,125

At a glance

14 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Presage Classic Series40.2mm
Power Reserve
Reef 39.5 mm56h
Presage Classic Series72h
Water Resistance
Reef 39.5 mm300m
Presage Classic Series100m
MSRP
Reef 39.5 mm$2,230
Presage Classic Series$1,125

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
39.5mm
40.2mm
Thickness
11mm
13mm
Lug-to-Lug
45.5mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Bahama Blue
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW300-1
6R5J
Power Reserve
56h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$2,230
$1,125

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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.

Seiko Presage Classic Series

The Seiko Presage Classic Series is widely praised for its sublime dial and hand finishing, with reviewers noting its radiant sunburst or textured dials inspired by silk and its elegant alpha hands and applied indices. Owners and reviewers highlight the robust elegance and value proposition, with 36mm and 40.2mm case options offering vintage proportions and 100m water resistance for versatility. The in-house 6R51 or 6R55 movement provides a substantial 72-hour power reserve. One owner criticizes the pin and collar bracelet system as awful, and the 24-hour subdial is noted as potentially annoying to some. Prices range from US$950 to US$1,800 depending on the model and features. Overall, owners and reviewers rate the Seiko Presage Classic Series highly for its exceptional dial finishing and versatile wearability at its price point.

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