Side by side

Bremont Supermarine 300MvsCitizen Series 8 870

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Series 8 870
CitizenSeries 8 870
MSRP $1,095

At a glance

10 of 29 specs differ
Diameter
Supermarine 300M40mm
Series 8 87039mm
Power Reserve
Supermarine 300M40h
Series 8 87042h
Water Resistance
Supermarine 300M300m
Series 8 870100m
MSRP
Supermarine 300M$3,550
Series 8 870$1,095

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
40mm
39mm
Lug-to-Lug
46mm
Lug Width
20mm
11mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Underside

Movement

2 specs
Caliber
BE-92AE
9051
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$3,550
$1,095

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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.

Citizen Series 8 870

The Citizen Series 8 870 is praised for its compelling value proposition and modern Japanese design with a sporty edge. Reviewers note its 40mm steel case, glossy dial with applied markers, and the in-house Calibre 0950 automatic movement offering 50 hours of power reserve and enhanced magnetic resistance. The flat sapphire crystal is noted to collect fingerprints, and the solid caseback omits a view of the movement. The limited edition variant features a 40.8mm black DLC-coated case, a carbon fiber dial, and the 0950 movement regulated to -5/+10 seconds per day. Overall, the Citizen Series 8 870 is viewed as a strong offering for its blend of design and features.

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