Side by side

Bell & Ross BR-03 Chrono BlacktrackvsOak & Oscar The Humboldt ExP-02

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
The Humboldt ExP-02
Oak & OscarThe Humboldt ExP-02
MSRP $2,400

At a glance

20 of 29 specs differ
Diameter
BR-03 Chrono Blacktrack42mm
The Humboldt ExP-0239.5mm
Power Reserve
BR-03 Chrono Blacktrack42 hoursh
The Humboldt ExP-0256h
Water Resistance
BR-03 Chrono Blacktrack100m
The Humboldt ExP-02200m
MSRP
BR-03 Chrono Blacktrack$7,776
The Humboldt ExP-02$2,400

Full specifications

Case

9 specs
Category
Chronograph
Tool
Diameter
42mm
39.5mm
Thickness
12.4mm
Lug-to-Lug
46.8mm
Lug Width
20mm
Material
Ceramic
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
200m
Caseback
Display

Crystal & Dial

5 specs
Crystal Shape
Double-domed
AR Coating
Underside
Inner
Dial Color
Black
Grey
Indices
Applied indices
Applied
Lume
Super-LumiNova
Super-LumiNova BGW9

Movement

5 specs
Caliber
BR-CAL.301
Sellita SW300
Beat Rate
28,800 vph
Power Reserve
42 hoursh
56h
Jewels
25
Complications
Hours/Minutes, Date, Chronograph
GMT, Chronograph

Pricing

1 specs
MSRP
$7,776
$2,400

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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.

Oak & Oscar The Humboldt ExP-02

Oak & Oscar The Humboldt ExP-02 is a 39.5mm stainless steel tool watch featuring a unique, layered aluminum "ghost dial" for legibility and 200m water resistance, powered by a Sellita SW300 movement. Its appeal is limited by a US$2,550 price and an extremely limited production of 20 pieces, with its experimental dial construction done in Chicago. Overall, reviewers highlight the endearing dial and in-house bezel production as key features of the Oak & Oscar Humboldt ExP-02.

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