Side by side

Formex Reef 39.5 mmvsRZE Fortitude GMT

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
Fortitude GMT
RZEFortitude GMT
MSRP $719

At a glance

14 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Fortitude GMT41mm
Power Reserve
Reef 39.5 mm56h
Fortitude GMT40h
Water Resistance
Reef 39.5 mm300m
Fortitude GMT200m
MSRP
Reef 39.5 mm$2,230
Fortitude GMT$719

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
39.5mm
41mm
Thickness
11mm
12mm
Lug-to-Lug
45.5mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel
Grade 5 Titanium
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Bahama Blue
Red
Lume
Super-LumiNova
Super-LumiNova BGW9

Movement

3 specs
Caliber
Sellita SW300-1
Miyota 9075
Power Reserve
56h
40h
Complications
None
GMT

Pricing

1 specs
MSRP
$2,230
$719

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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.

RZE Fortitude GMT

The RZE Fortitude GMT is widely praised for its lightweight titanium construction and durable UltraHex coating, offering exceptional value under $700. Owners and reviewers highlight its comfortable wearability, with a bracelet featuring a quick-adjust clasp and multiple micro-adjustment positions. The Miyota 9075 flyer GMT movement is noted for its accuracy, with one owner reporting -1 to +1 seconds per day, though another source states a range of -10/+30 seconds per day. The watch's design is appreciated for its soul and attention to detail, including a subtle red crown tube indicator and faceted lugs, and its Nimbus Grey dial features a coarse, sandpaper-like texture and fumé effect. A reviewer points out the rotor can be loud and a smaller screwdriver is needed for sizing, while an owner found the GMT hand lume confusing. Overall, owners and reviewers rate the RZE Fortitude GMT highly for its comfortable titanium build, durable coating, and excellent value.

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