Side by side

Formex Reef 39.5 mmvsGrand Seiko SBGA481

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
SBGA481
Grand SeikoSBGA481
MSRP $11,100

At a glance

13 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
SBGA48144.5mm
Power Reserve
Reef 39.5 mm56h
SBGA48172h
Water Resistance
Reef 39.5 mm300m
SBGA481200m
MSRP
Reef 39.5 mm$2,230
SBGA481$11,100

Full specifications

Case

6 specs
Diameter
39.5mm
44.5mm
Thickness
11mm
14.3mm
Lug-to-Lug
45.5mm
50mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW300-1
9R65
Type
Automatic
Spring Drive
Power Reserve
56h
72h

Pricing

1 specs
MSRP
$2,230
$11,100

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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 SBGA481

Grand Seiko SBGA481 owners praise its light titanium case and sharp finishing, with one owner reporting it runs perfectly. Reviewers describe the SBGA481 as an unapologetically Grand Seiko creation with a unique hour hand and a "geeky, techy vibe" that some find daring. On balance, the consensus is that the Grand Seiko SBGA481 is a fun and daring watch that showcases the brand's distinctive design language.

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