Side by side

Bremont Supermarine 300MvsSpinnaker Croft 39 GMT

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Croft 39 GMT
SpinnakerCroft 39 GMT
MSRP $445

At a glance

9 of 29 specs differ
Diameter
Supermarine 300M40mm
Croft 39 GMT39mm
Power Reserve
Supermarine 300M40h
Croft 39 GMT40h
Water Resistance
Supermarine 300M300m
Croft 39 GMT100m
MSRP
Supermarine 300M$3,550
Croft 39 GMT$445

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12mm
13mm
Lug-to-Lug
47mm
Material
904L Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Green
Red

Movement

1 specs
Caliber
BE-92AE
Seiko NH34A

Pricing

1 specs
MSRP
$3,550
$445

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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.

Spinnaker Croft 39 GMT

Owners praise the Spinnaker Croft 39 GMT for its colorful design, NH34 GMT movement, and reasonable price, noting high-standard manufacturing on the case, bezel, and bracelet. One owner finds the 43mm case and 51mm lug-to-lug dimensions too large for the design, preferring a 39-40mm case size. A potential issue with the lume was noted by one user. On balance, owners value the Spinnaker Croft 39 GMT for its attractive design and build quality at its price point, though sizing is a point of contention for some.

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