Which is cheaper, the Bremont Supermarine 300M or the Core Timepieces The River Watch?

At MSRP the Core Timepieces The River Watch is the cheaper of the two at $540, against $3,550 for the Bremont Supermarine 300M — a $3,010 gap before any retailer discounting.

Which is bigger, the Bremont Supermarine 300M or the Core Timepieces The River Watch?

The Core Timepieces The River Watch wears larger at 42mm versus 40mm for the Bremont Supermarine 300M — a 2mm difference across the dial.

What movement does the Bremont Supermarine 300M run compared to the Core Timepieces The River Watch?

Both watches run automatic movements — the Bremont Supermarine 300M uses the BE-92AE and the Core Timepieces The River Watch uses the Seiko NH34A.

Side by side

Bremont Supermarine 300MvsCore Timepieces The River Watch

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

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Bremont Supermarine 300M

sm40-nd-ss-gn-b

MSRP $3,550

Core Timepieces The River Watch

MSRP $540

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At a glance

9 of 29 specs differ

Diameter

Supermarine 300M40mm

The River Watch42mm

Power Reserve

Supermarine 300M40h

The River Watch—

Water Resistance

Supermarine 300M300m

The River Watch300m

MSRP

Supermarine 300M$3,550

The River Watch$540

Full specifications

Case

5 specs

Crystal & Dial

1 specs

Dial Color

Green

—

Movement

2 specs

Caliber

BE-92AE

Seiko NH34A

Power Reserve

40h

—

Pricing

1 specs

MSRP

$3,550

—

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Bremont Supermarine 300MvsCore Timepieces The River Watch

At a glance

Full specifications

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