Side by side

Bell & Ross BR-05 DiamondvsMarathon GPQ (General Purpose Quartz) Field Watch

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

BR-05 Diamond
Bell & RossBR-05 Diamond
MSRP $24,829
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

21 of 29 specs differ
Diameter
BR-05 Diamond40mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
BR-05 Diamond
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
BR-05 Diamond100m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
BR-05 Diamond$24,829
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

9 specs
Category
Field
Diameter
40mm
34mm
Thickness
11.5mm
Lug-to-Lug
41mm
Lug Width
16mm
Material
Stainless Steel
Fibreshell Composite
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Acrylic
Crystal Shape
Flat
AR Coating
Underside
Inner
Indices
Applied indices
Applied
Lume
Super-LumiNova
None

Movement

6 specs
Caliber
BR-CAL.321
Swiss High-Torque Quartz (3J, EOL)
Type
Automatic
Quartz
Beat Rate
28,800 vph
Power Reserve
40h
Jewels
25
Complications
Hours/Minutes, Seconds, Date
None

Pricing

1 specs
MSRP
$24,829
$420

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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-05 Diamond

Owners widely praise the Bell & Ross BR-05 Diamond's design and build quality, noting its comfortable wearability and a less derivative appearance in person. The contrast between brushed and polished finishes, along with the blue sunray dial, contributes to its appeal as a versatile integrated steel sports watch. Some owners, however, find the crown to be a bit fussy and criticize the high price relative to the SW300-1 movement. On balance, owners rate the Bell & Ross BR-05 Diamond highly for its striking design and versatile wearability.

Marathon GPQ (General Purpose Quartz) Field Watch

Owners widely praise the Marathon GPQ (General Purpose Quartz) Field Watch for its rugged quartz movement, accuracy, and tritium lume. Reviewers and owners alike highlight its solid build, legibility, and comfortable, lightweight wear, making it particularly well-suited for smaller wrists. Some owners, however, consider the price point of $350-420 to be somewhat high. On balance, the consensus is that owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its dependable quartz accuracy and excellent tritium lume.

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