Side by side

Bell & Ross BR-03 Chrono BlacktrackvsBremont Supermarine 300M

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

BR-03 Chrono Blacktrack
Bell & RossBR-03 Chrono Blacktrack
MSRP $7,776
Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

19 of 29 specs differ
Diameter
BR-03 Chrono Blacktrack42mm
Supermarine 300M40mm
Power Reserve
BR-03 Chrono Blacktrack42 hoursh
Supermarine 300M40h
Water Resistance
BR-03 Chrono Blacktrack100m
Supermarine 300M300m
MSRP
BR-03 Chrono Blacktrack$7,776
Supermarine 300M$3,550

Full specifications

Case

8 specs
Category
Chronograph
Diver
Diameter
42mm
40mm
Thickness
12mm
Lug Width
20mm
Material
Ceramic
904L Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
Green
Indices
Applied indices
Applied
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
BR-CAL.301
BE-92AE
Beat Rate
28,800 vph
Power Reserve
42 hoursh
40h
Jewels
25
Complications
Hours/Minutes, Date, Chronograph
None

Pricing

1 specs
MSRP
$7,776
$3,550

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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.

Bell & Ross BR-03 Chrono Blacktrack

Owners widely appreciate the Bell & Ross BR-03 Chrono Blacktrack for its unique square, military-inspired, stealthy all-black ceramic design and dial styled like a motorcycle's cooling grid, finding it a refreshing alternative to common styles. Reviewers note the watch's surprising wearability, particularly with flared straps, and its futuristic design with personality. Accuracy figures vary, with one source reporting +10 seconds per day for the ETA 2894-2 based BR-CAL.301 movement, which has a 42-hour power reserve. Some owners criticize the use of rebranded base movements and significant depreciation, while one reviewer found the padded, quilted strap less comfortable than usual and noted poor lume. On balance, owners and reviewers rate the Bell & Ross BR-03 Chrono Blacktrack well for its distinctive, personality-filled design.

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.

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