Which is cheaper, the Bremont Supermarine 300M or the Longines FLAGSHIP HERITAGE?

At MSRP the Longines FLAGSHIP HERITAGE is the cheaper of the two at $2,150, against $3,550 for the Bremont Supermarine 300M — a $1,400 gap before any retailer discounting.

Which is bigger, the Bremont Supermarine 300M or the Longines FLAGSHIP HERITAGE?

The Bremont Supermarine 300M wears larger at 40mm versus 38.5mm for the Longines FLAGSHIP HERITAGE — a 1.5mm difference across the dial.

Which has better water resistance, the Bremont Supermarine 300M or the Longines FLAGSHIP HERITAGE?

The Bremont Supermarine 300M is rated to 300m versus 30m for the Longines FLAGSHIP HERITAGE.

What movement does the Bremont Supermarine 300M run compared to the Longines FLAGSHIP HERITAGE?

Both watches run automatic movements — the Bremont Supermarine 300M uses the BE-92AE and the Longines FLAGSHIP HERITAGE uses the L615.3.

Side by side

Bremont Supermarine 300MvsLongines FLAGSHIP HERITAGE

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

Longines FLAGSHIP HERITAGE

L4.795.4.58.0

MSRP $2,150

At a glance

20 of 29 specs differ

Diameter

Supermarine 300M40mm

FLAGSHIP HERITAGE38.5mm

Power Reserve

Supermarine 300M40h

FLAGSHIP HERITAGE—

Water Resistance

Supermarine 300M300m

FLAGSHIP HERITAGE30m

MSRP

Supermarine 300M$3,550

FLAGSHIP HERITAGE$2,150

Full specifications

Case

9 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

—

AR Coating

Inner

—

Dial Color

Green

Anthracite

Indices

Applied

—

Movement

6 specs

Caliber

BE-92AE

L615.3

Beat Rate

28,800 vph

0 vph

Power Reserve

40h

Jewels

Hacking

Yes

Hand-winding

Yes

Pricing

1 specs

MSRP

$3,550

$2,150

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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.

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Longines FLAGSHIP HERITAGE

The Longines Flagship Heritage is widely praised for its impeccable finishing, timeless vintage-inspired design, and exceptional value, with reviewers highlighting its elegant cream dial with gilt markers, dauphine hands, and applied logo, as well as its comfortable 38.5mm case size. Owners appreciate its refined aesthetic, suitable for dressed occasions and as a first watch, and some note the special design on the case back. However, its 42-hour power reserve and 12.4mm thickness are flagged as drawbacks, with one owner suspecting an issue with the self-winding mechanism. Overall, owners and reviewers rate the Longines Flagship Heritage highly for its elegant vintage design and exceptional value at its price point.

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