Side by side

Bremont Supermarine 300MvsHamilton Jazzmaster 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
Jazzmaster Auto Chrono
HamiltonJazzmaster Auto Chrono
MSRP $2,095

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
Jazzmaster Auto Chrono42mm
Power Reserve
Supermarine 300M40h
Jazzmaster Auto Chrono60h
Water Resistance
Supermarine 300M300m
Jazzmaster Auto Chrono100m
MSRP
Supermarine 300M$3,550
Jazzmaster Auto Chrono$2,095

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
40mm
42mm
Thickness
12mm
15.23mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Green
Black

Movement

2 specs
Caliber
BE-92AE
H-21
Power Reserve
40h
60h

Pricing

1 specs
MSRP
$3,550
$2,095

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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 Jazzmaster Auto Chrono

Owners widely praise the Hamilton Jazzmaster Auto Chrono for its value and dressy yet substantial look. The H-31 or adapted 7753 movement is noted, alongside a 60-hour power reserve. Some owners prefer a 3-6-9 subdial layout or a smaller case size, and the movement's thickness makes it unsuitable for those seeking a slim watch. On balance, owners rate the Hamilton Jazzmaster Auto Chrono highly for its value and refined aesthetic.

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