Side by side

Bremont ionBirdvsMarathon GPQ (General Purpose Quartz) Field Watch

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

ionBird
BremontionBird
MSRP $5,800
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

12 of 29 specs differ
Diameter
ionBird43mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
ionBird40h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
ionBird
GPQ (General Purpose Quartz) Field Watch30m
MSRP
ionBird$5,800
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Pilot
Field
Diameter
43mm
34mm
Thickness
11.5mm
Lug-to-Lug
41mm
Lug Width
16mm
Material
Titanium
Fibreshell Composite
Water Resistance
30m

Crystal & Dial

2 specs
Crystal
Sapphire
Acrylic
Dial Color
Regular length (15cm - 19cm wrist size)
Black

Movement

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

Pricing

1 specs
MSRP
$5,800
$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.

Bremont ionBird

Owners report the Bremont ionBird is overpriced and features a printed dial with a poorly placed date window at 4:30, which some find visually disruptive. However, some owners suggest its case finishing is superior to competitors. The 43mm titanium Bremont ionBird GMT is powered by a COSC-certified BE-93-2AV automatic movement and retails for $5,795. On balance, owners and reviewers find the Bremont ionBird's date window placement and price point to be significant drawbacks.

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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