Side by side

Bremont Supermarine 300MvsLorier Neptune SIV

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Neptune SIV
LorierNeptune SIV
MSRP $599

At a glance

7 of 29 specs differ
Diameter
Supermarine 300M40mm
Neptune SIV39mm
Power Reserve
Supermarine 300M40h
Neptune SIV40h
Water Resistance
Supermarine 300M300m
Neptune SIV200m
MSRP
Supermarine 300M$3,550
Neptune SIV$599

Full specifications

Case

4 specs
Diameter
40mm
39mm
Thickness
12mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Green
Standard

Movement

1 specs
Caliber
BE-92AE

Pricing

1 specs
MSRP
$3,550
$599

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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.

Lorier Neptune SIV

Owners widely praise the Lorier Neptune SIV for its versatile, vintage-inspired design featuring a glossy gilt-style dial and a comfortable, tapered bracelet, noting its affordability reduces wear anxiety. Reviewers and owners alike mention the acrylic crystal as a point of contention, with some preferring sapphire, and one owner finds the bracelet lacks the feel of more expensive options. On balance, owners and reviewers rate the Lorier Neptune SIV highly for its appealing vintage aesthetic and value proposition.

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