Side by side

Formex Reef 39.5 mmvsSeiko Captain Willard

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

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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 Captain Willard

The Seiko Prospex Sea 1970 Diver's Modern Re-interpretation is praised for its impressive finishing and value, with reviewers noting its well-designed dial and excellent LumiBrite lume. The watch features a textured grey or dark brown dial, silver hands and indexes with beige or cream lume, and a matte grey or dark bezel insert. It houses the 6R35 automatic movement with a 70-hour power reserve. Some reviewers question if its performance specs align with its price point. Overall, reviewers rate the Seiko Prospex Sea 1970 Diver's Modern Re-interpretation highly for its finishing and value over $1,000.

At a glance

13 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Captain Willard42.7mm
Power Reserve
Reef 39.5 mm56h
Captain Willard70h
Water Resistance
Reef 39.5 mm300m
Captain Willard200m
MSRP
Reef 39.5 mm$2,230
Captain Willard$1,300

Full specifications

Case

5 specs
Diameter
39.5mm
42.7mm
Thickness
11mm
13.2mm
Lug-to-Lug
45.5mm
46.6mm
Lug Width
22mm
20mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
underside
Dial Color
Bahama Blue
Black
Lume
Super-LumiNova
LumiBrite

Movement

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

Pricing

1 specs
MSRP
$2,230
$1,300
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