Side by side
Bremont Supermarine 300MvsDuckworth Prestex Belmont 300 Automatic
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
Supermarine 300M40mm
Belmont 300 Automatic42mm
Power Reserve
Supermarine 300M40h
Belmont 300 Automatic38h
Water Resistance
Supermarine 300M300m
Belmont 300 Automatic300m
MSRP
Supermarine 300M$3,550
Belmont 300 Automatic$750
Full specifications
Case
5 specsCategory
Diver
—
Diameter
40mm
42mm
Thickness
12mm
13mm
Lug-to-Lug
—
50mm
Material
904L Stainless Steel
Stainless Steel
Crystal & Dial
1 specsDial Color
Green
—
Movement
2 specsCaliber
BE-92AE
Miyota 9039
Power Reserve
40h
38h
Pricing
1 specsMSRP
$3,550
$750
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