Side by side

Formex Reef GMTvsGrand Seiko SBGH289

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

Reef GMT
FormexReef GMT
MSRP $2,235
SBGH289
Grand SeikoSBGH289
MSRP $7,700
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 GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

Grand Seiko SBGH289

The Grand Seiko SBGH289 is praised for its legible blue dial, strong Lumibrite, and the accurate Hi-Beat Caliber 9S85 movement. Reviewers note its bright initial lume glow, though its longevity is questioned compared to other models. The watch features Grand Seiko's Super-Hard Coating for scratch resistance and retails for €7,200. Overall, reviewers highlight the SBGH289's appealing aesthetics and robust movement as key strengths.

From video reviewers

Excellent finishing and smooth bezel action are notable features of the Grand Seiko SBGH289. A weakness of the watch is the relatively low lume brightness. Reviewers disagree on the watch's ideal lug width, with some considering 22mm a limitation for users who prefer a more standard 20mm or 21mm strap width, while others do not mention this as a concern.

At a glance

10 of 29 specs differ
Diameter
Reef GMT42mm
SBGH28943.8mm
Power Reserve
Reef GMT56h
SBGH28955h
Water Resistance
Reef GMT300m
SBGH289200m
MSRP
Reef GMT$2,235
SBGH289$7,700

Full specifications

Case

5 specs
Category
GMT
Diver
Diameter
42mm
43.8mm
Thickness
11.4mm
14.7mm
Lug-to-Lug
47mm
51mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW330-2
9S85
Power Reserve
56h
55h

Pricing

1 specs
MSRP
$2,235
$7,700
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