Side by side

Bremont Supermarine 300MvsSeiko Coutura

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Coutura
SeikoCoutura
MSRP $595

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
Coutura42.5mm
Power Reserve
Supermarine 300M40h
Coutura40h
Water Resistance
Supermarine 300M300m
Coutura100m
MSRP
Supermarine 300M$3,550
Coutura$595

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
42.5mm
Thickness
12mm
10.2mm
Lug-to-Lug
46mm
Lug Width
20mm
12mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Green
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
BE-92AE
V157
Type
Automatic
Quartz
Jewels
25
2

Pricing

1 specs
MSRP
$3,550
$595

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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.

Seiko Coutura

Seiko Coutura owners widely praise its wear-resistant metal treatments, with one reporting minimal scratches after six years. The watch is also lauded for its solar and perpetual calendar features, offering a "set it and forget it" experience with 100m water resistance. Owners appreciate its weight and captivating appearance, with one purchasing it for $410.88. The aesthetic, featuring contrasting gold indices and hands against a black dial, is considered appealing by some, particularly those who enjoy its unique and fun design. However, opinions on styling are divided, with some finding the dial too busy and gaudy, and others describing the line as large or sitting too high. The proprietary bracelet is also noted as a downside by some owners. One owner reports the solar power reserve can be problematic if not exposed to light regularly, while another calls their kinetic perpetual a beautiful keeper with a 4-year reserve.

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