Side by side

Bremont Supermarine 300MvsHamilton Khaki Aviation Air Race Auto

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Khaki Aviation Air Race Auto
HamiltonKhaki Aviation Air Race Auto
MSRP $845

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
Khaki Aviation Air Race Auto38mm
Power Reserve
Supermarine 300M40h
Khaki Aviation Air Race Auto80h
Water Resistance
Supermarine 300M300m
Khaki Aviation Air Race Auto50m
MSRP
Supermarine 300M$3,550
Khaki Aviation Air Race Auto$845

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
40mm
38mm
Thickness
12mm
10.8mm
Lug-to-Lug
46mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

1 specs
Dial Color
Green
Black

Movement

2 specs
Caliber
BE-92AE
H-10
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$3,550
$845

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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 Khaki Aviation Air Race Auto

Owners widely praise the Hamilton Khaki Aviation Air Race Auto for its legibility and practicality, with some appreciating its countdown bezel and GMT pointer. However, opinions on its design are split, with some calling it a "Frankenstein" and disliking the skeleton hands, while others find the hands suitable for a pilot watch. One owner notes the lume is underwhelming and the 44mm size may be too large for some wrists. The original strap is also described as uncomfortable and prone to water stains. On balance, owners value the Hamilton Khaki Aviation Air Race Auto for its legibility and practical features, despite a polarizing design and some comfort concerns.

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