Side by side

Bremont Supermarine 300MvsSeiko Diamond Collection

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Diamond Collection
SeikoDiamond Collection
MSRP $525

At a glance

10 of 29 specs differ
Diameter
Supermarine 300M40mm
Diamond Collection32mm
Power Reserve
Supermarine 300M40h
Diamond Collection40h
Water Resistance
Supermarine 300M300m
Diamond Collection100m
MSRP
Supermarine 300M$3,550
Diamond Collection$525

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
32mm
Thickness
12mm
8.2mm
Lug-to-Lug
39mm
Lug Width
20mm
15mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Green
Black

Movement

1 specs
Caliber
BE-92AE
6N32

Pricing

1 specs
MSRP
$3,550
$525

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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 Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

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