Which is cheaper, the Bremont Supermarine 300M or the Sheffield 1A?

At MSRP the Sheffield 1A is the cheaper of the two at $223, against $3,550 for the Bremont Supermarine 300M — a $3,327 gap before any retailer discounting.

Which has better water resistance, the Bremont Supermarine 300M or the Sheffield 1A?

The Bremont Supermarine 300M is rated to 300m versus 200m for the Sheffield 1A.

What movement does the Bremont Supermarine 300M run compared to the Sheffield 1A?

Both watches run automatic movements — the Bremont Supermarine 300M uses the BE-92AE and the Sheffield 1A uses the Seiko NH35A.

Side by side

Bremont Supermarine 300MvsSheffield 1A

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

Add a watch

Bremont Supermarine 300M

sm40-nd-ss-gn-b

MSRP $3,550

Sheffield 1A

diver-1a-40mm-white

MSRP $223

At a glance

9 of 29 specs differ

Diameter

Supermarine 300M40mm

1A40mm

Power Reserve

Supermarine 300M40h

1A—

Water Resistance

Supermarine 300M300m

1A200m

MSRP

Supermarine 300M$3,550

1A$223

Full specifications

Case

4 specs

Thickness

12mm

12.8mm

Lug-to-Lug

—

46mm

Material

904L Stainless Steel

Stainless Steel

Water Resistance

300m

200m

Crystal & Dial

2 specs

Dial Color

Green

White/Blue

Lume

None

Swiss blue lume

Movement

2 specs

Caliber

BE-92AE

Seiko NH35A

Power Reserve

40h

—

Pricing

1 specs

MSRP

$3,550

$223

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Bremont Supermarine 300MvsSheffield 1A

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