Side by side

Fortis Marinemaster M-40vsFormex Reef 42 mm

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

Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520
Reef 42 mm
FormexReef 42 mm
MSRP $2,414

At a glance

10 of 29 specs differ
Diameter
Marinemaster M-4040mm
Reef 42 mm42mm
Power Reserve
Marinemaster M-4038h
Reef 42 mm56h
Water Resistance
Marinemaster M-40300m
Reef 42 mm300m
MSRP
Marinemaster M-40$3,520
Reef 42 mm$2,414

Full specifications

Case

4 specs
Diameter
40mm
42mm
Thickness
13mm
11.4mm
Lug-to-Lug
47mm
Lug Width
21mm
22mm

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW220-1
Sellita SW300-1
Power Reserve
38h
56h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$2,414

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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.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

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