Side by side

Bremont Supermarine 300MvsHamilton American Classic RailRoad Auto

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
American Classic RailRoad Auto
HamiltonAmerican Classic RailRoad Auto
MSRP $1,295

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
American Classic RailRoad Auto32mm
Power Reserve
Supermarine 300M40h
American Classic RailRoad Auto43h
Water Resistance
Supermarine 300M300m
American Classic RailRoad Auto50m
MSRP
Supermarine 300M$3,550
American Classic RailRoad Auto$1,295

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
32mm
Thickness
12mm
11.3mm
Lug-to-Lug
46mm
Lug Width
20mm
16mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

1 specs
Dial Color
Green
Beige

Movement

2 specs
Caliber
BE-92AE
ETA 2681
Power Reserve
40h
43h

Pricing

1 specs
MSRP
$3,550
$1,295

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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.

Hamilton American Classic RailRoad Auto

Owners widely praise the Hamilton American Classic RailRoad Auto as a versatile everyday watch, noting its stellar appearance on bracelet or strap and the desirable H-10 movement providing an 80-hour power reserve. The 40mm case, measuring 11.35mm thick with slightly turned-down lugs, contributes to a thinner perceived profile. It is offered for $430 shipped and includes a travel pouch.

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