Which is cheaper, the Bremont Supermarine 300M or the Fears X James Porter & Son LE?

At MSRP the Fears X James Porter & Son LE is the cheaper of the two at $3,292, against $3,550 for the Bremont Supermarine 300M — a $258 gap before any retailer discounting.

Which is bigger, the Bremont Supermarine 300M or the Fears X James Porter & Son LE?

The Bremont Supermarine 300M wears larger at 40mm versus 38mm for the Fears X James Porter & Son LE — a 2mm difference across the dial.

Which has better water resistance, the Bremont Supermarine 300M or the Fears X James Porter & Son LE?

The Bremont Supermarine 300M is rated to 300m versus 10m for the Fears X James Porter & Son LE.

What movement does the Bremont Supermarine 300M run compared to the Fears X James Porter & Son LE?

The Bremont Supermarine 300M runs a automatic caliber (BE-92AE), while the Fears X James Porter & Son LE runs a manual (ETA 7001).

Side by side

Bremont Supermarine 300MvsFears X James Porter & Son LE

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

Bremont Supermarine 300M

sm40-nd-ss-gn-b

MSRP $3,550

Fears X James Porter & Son LE

brunswick-x-james-porter-son-limited-edition

MSRP $3,292

At a glance

11 of 29 specs differ

Diameter

Supermarine 300M40mm

X James Porter & Son LE38mm

Power Reserve

Supermarine 300M40h

X James Porter & Son LE40h

Water Resistance

Supermarine 300M300m

X James Porter & Son LE10m

MSRP

Supermarine 300M$3,550

X James Porter & Son LE$3,292

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Green

x James Porter & Son LE

Movement

2 specs

Caliber

BE-92AE

ETA 7001

Type

Automatic

Manual

Pricing

1 specs

MSRP

$3,550

$3,292

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