Side by side

Formex Reef 39.5 mmvsGrand Seiko SBGP007

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
SBGP007
Grand SeikoSBGP007
MSRP $3,900

At a glance

14 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
SBGP00740mm
Power Reserve
Reef 39.5 mm56h
SBGP00740h
Water Resistance
Reef 39.5 mm300m
SBGP007100m
MSRP
Reef 39.5 mm$2,230
SBGP007$3,900

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
39.5mm
40mm
Thickness
11mm
10.8mm
Lug-to-Lug
45.5mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel
Gold
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Bahama Blue
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW300-1
9F85
Type
Automatic
Quartz
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$3,900

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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.

Grand Seiko SBGP007

Grand Seiko SBGP007 owners widely praise its finishing and the quality of its stainless steel case and bracelet with solid end links. The watch features a 40mm case, a smooth bezel, a deep blue textured dial, and Grand Seiko alpha hands. It is powered by the Seiko calibre 9F85 quartz movement. Owners are split on the red seconds hand and gold star emblem, with some finding them too bright or childish, while others defend the star as a mark of accuracy. The $3900 MSRP is debated, with some considering it high for a quartz watch. Overall, owners rate the Grand Seiko SBGP007 highly for its exceptional finishing at the price point, despite some debate over aesthetic details.

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