Side by side

Bremont Supermarine 300MvsFortis Marinemaster M-40

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

8 of 29 specs differ
Diameter
Supermarine 300M40mm
Marinemaster M-4040mm
Power Reserve
Supermarine 300M40h
Marinemaster M-4038h
Water Resistance
Supermarine 300M300m
Marinemaster M-40300m
MSRP
Supermarine 300M$3,550
Marinemaster M-40$3,520

Full specifications

Case

3 specs
Thickness
12mm
13mm
Lug Width
20mm
21mm
Material
904L Stainless Steel
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Green
Orange

Movement

3 specs
Caliber
BE-92AE
Sellita SW220-1
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$3,550
$3,520

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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.

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

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.

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