Side by side

Formex Reef GMTvsSpinnaker Bradner GMT

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

Reef GMT
FormexReef GMT
MSRP $2,235
Bradner GMT
SpinnakerBradner GMT
MSRP $299

At a glance

9 of 29 specs differ
Diameter
Reef GMT42mm
Bradner GMT42mm
Power Reserve
Reef GMT56h
Bradner GMT40h
Water Resistance
Reef GMT300m
Bradner GMT180m
MSRP
Reef GMT$2,235
Bradner GMT$299

Full specifications

Case

4 specs
Thickness
11.4mm
15mm
Lug-to-Lug
47mm
50mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
180m

Crystal & Dial

2 specs
Dial Color
Black
Brown
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW330-2
Seiko NH34A
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,235
$299

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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 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.

Spinnaker Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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