Side by side

Bremont Supermarine 300MvsChristopher Ward C65 Dune Aeolian

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
C65 Dune Aeolian
Christopher WardC65 Dune Aeolian
MSRP $1,415

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
C65 Dune Aeolian40mm
Power Reserve
Supermarine 300M40h
C65 Dune Aeolian38h
Water Resistance
Supermarine 300M300m
C65 Dune Aeolian150m
MSRP
Supermarine 300M$3,550
C65 Dune Aeolian$1,415

Full specifications

Case

5 specs
Category
Diver
Thickness
12mm
11.7mm
Lug-to-Lug
43.6mm
Material
904L Stainless Steel
Bronze
Water Resistance
300m
150m

Crystal & Dial

3 specs
Dial Color
Green
Brown
Indices
Applied
Roman numerals
Lume
None
SLN Light Old Radium BL Grade X1

Movement

4 specs
Caliber
BE-92AE
SW200-1
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$3,550
$1,415

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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.

Christopher Ward C65 Dune Aeolian

The Christopher Ward C65 Dune Aeolian is widely praised for its unique, textured dial and comfortable 38mm case size, with reviewers noting its excellent finishing for the price and the Bader bracelet as a standout feature. Owners appreciate the clean, date-free dial and the wavy pattern, with one comparing it favorably to Grand Seiko. The bronze variant develops a warm patina over time. Accuracy is reported as COSC-certified and around +4 seconds per day by one owner, while another notes a rating of up to 20 seconds per day. The time-only models feature a Sellita SW200-1 movement with a 38-hour power reserve, though the GMT variant uses a Sellita SW330 with a 56-hour power reserve. Some owners expressed concerns about the sandy texture becoming tiresome or the grey dial blending with the case, and one reviewer found the dial details and applied logo "a bit much." Customer service experiences were mixed, with one owner reporting a frustrating battle and long repair turnaround.

From video reviewers

The watch's unique textured dial is a notable strength, giving it an organic design that sets it apart from other field watches. A weakness is the somewhat lacking lume performance, which may be a drawback for those who prioritize nighttime legibility. Reviewers disagree on the movement's power reserve, with some considering 38 hours sufficient and others finding it too short.

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