Side by side

Bremont Supermarine 300MvsRZE Fortitude GMT

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Fortitude GMT
RZEFortitude GMT
MSRP $719

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
Fortitude GMT41mm
Power Reserve
Supermarine 300M40h
Fortitude GMT40h
Water Resistance
Supermarine 300M300m
Fortitude GMT200m
MSRP
Supermarine 300M$3,550
Fortitude GMT$719

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
40mm
41mm
Lug-to-Lug
47mm
Material
904L Stainless Steel
Grade 5 Titanium
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Green
Red
Lume
None
Super-LumiNova BGW9

Movement

2 specs
Caliber
BE-92AE
Miyota 9075
Complications
None
GMT

Pricing

1 specs
MSRP
$3,550
$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.

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.

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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