Side by side

Bremont Supermarine 300MvsHamilton American Classic Spirit of Liberty Auto Chrono

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

10 of 29 specs differ
Diameter
Supermarine 300M40mm
American Classic Spirit of Liberty Auto Chrono42mm
Power Reserve
Supermarine 300M40h
American Classic Spirit of Liberty Auto Chrono40h
Water Resistance
Supermarine 300M300m
American Classic Spirit of Liberty Auto Chrono50m
MSRP
Supermarine 300M$3,550
American Classic Spirit of Liberty Auto Chrono$2,225

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
40mm
42mm
Thickness
12mm
14.75mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

1 specs
Dial Color
Green
Black

Movement

1 specs
Caliber
BE-92AE
H-21

Pricing

1 specs
MSRP
$3,550
$2,225

Follow this matchup

Get a note when Bremont Supermarine 300M vs Hamilton American Classic Spirit of Liberty Auto Chrono gets more votes, a community discussion, or a price drop. No account needed.

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 Spirit of Liberty Auto Chrono

Owners widely praise the Hamilton American Classic Spirit of Liberty Auto Chrono for its impressive craftsmanship, details, and overall finish, noting sharp edges on the mixed brushed and polished lugs that give it a premium look and a refined yet bold presence. The watch offers an improved 60-hour power reserve and increased precision. However, its pushers are noted as being chunky. On balance, owners rate the Hamilton American Classic Spirit of Liberty Auto Chrono highly for its premium finishing and refined presence on the wrist.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.