Side by side

Marathon GPQ (General Purpose Quartz) Field WatchvsSpinnaker Bradner Pearl Diver

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

GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420
Bradner Pearl Diver
SpinnakerBradner Pearl Diver
MSRP $370

At a glance

12 of 29 specs differ
Diameter
GPQ (General Purpose Quartz) Field Watch34mm
Bradner Pearl Diver42mm
Power Reserve
GPQ (General Purpose Quartz) Field Watch40h
Bradner Pearl Diver40h
Water Resistance
GPQ (General Purpose Quartz) Field Watch30m
Bradner Pearl Diver180m
MSRP
GPQ (General Purpose Quartz) Field Watch$420
Bradner Pearl Diver$370

Full specifications

Case

7 specs
Category
Field
Diver
Diameter
34mm
42mm
Thickness
11.5mm
15mm
Lug-to-Lug
41mm
50mm
Lug Width
16mm
22mm
Material
Fibreshell Composite
316L Stainless Steel
Water Resistance
30m
180m

Crystal & Dial

2 specs
Crystal
Acrylic
Sapphire
Dial Color
Black
Emerald

Movement

2 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
SII NH35A
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$420
$370

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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.

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.

Spinnaker Bradner Pearl Diver

The Spinnaker Bradner Pearl Diver is noted by owners as large on smaller wrists, with a 50mm lug-to-lug and 15mm height being a concern, though some find it acceptable with specific strap choices. Opinions on finishing quality vary, with one owner reporting issues like a poorly seated bezel and crooked indices. Overall, owners rate the Spinnaker Bradner Pearl Diver with mixed reviews regarding its size and finishing.

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