Side by side

Bell & Ross BR-03 Chrono BlacktrackvsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

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
JDD (Jumbo Day/Date) Anthracite Diver's Automatic
MarathonJDD (Jumbo Day/Date) Anthracite Diver's Automatic
MSRP $3,250

At a glance

20 of 29 specs differ
Diameter
BR-03 Chrono Blacktrack42mm
JDD (Jumbo Day/Date) Anthracite Diver's Automatic46mm
Power Reserve
BR-03 Chrono Blacktrack42 hoursh
JDD (Jumbo Day/Date) Anthracite Diver's Automatic40h
Water Resistance
BR-03 Chrono Blacktrack100m
JDD (Jumbo Day/Date) Anthracite Diver's Automatic300m
MSRP
BR-03 Chrono Blacktrack$7,776
JDD (Jumbo Day/Date) Anthracite Diver's Automatic$3,250

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
42mm
46mm
Thickness
18mm
Lug-to-Lug
55mm
Lug Width
22mm
Material
Ceramic
316L Stainless Steel (Anthracite IP)
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid

Crystal & Dial

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

Movement

5 specs
Caliber
BR-CAL.301
Sellita SW220-1
Beat Rate
28,800 vph
Power Reserve
42 hoursh
40h
Jewels
25
Complications
Hours/Minutes, Date, Chronograph
None

Pricing

1 specs
MSRP
$7,776
$3,250

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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.

Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.

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