Side by side

Halios Seaforth IVvsMarathon GPQ (General Purpose Quartz) Field Watch

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

12 of 29 specs differ
Diameter
Seaforth IV40mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
Seaforth IV40h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
Seaforth IV200m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
Seaforth IV$765
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
40mm
34mm
Thickness
12.4mm
11.5mm
Lug-to-Lug
46.5mm
41mm
Lug Width
20mm
16mm
Material
Titanium
Fibreshell Composite
Water Resistance
200m
30m

Crystal & Dial

2 specs
Crystal
Sapphire (double-domed)
Acrylic
Dial Color
Blue
Black

Movement

2 specs
Caliber
Sellita SW200-2
Swiss High-Torque Quartz (3J, EOL)
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$765
$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.

Halios Seaforth IV

Owners widely praise the Halios Sunburst Blue for its perfect 40mm size, stunning sunburst dial, and excellent lume, with one owner calling it Halios's best effort and a potential "Omega AT killer." The ETA 2824 movement is noted as running smoothly, and the watch is considered a great value with strong resale. Some owners desire larger sizes or different dial colors, and one reviewer found the Sinn 556i more versatile. The sapphire bezel is described as tall and flat, which is a point of contention for some. Overall, owners rate the Halios Sunburst Blue highly for its design, size, and value.

From video reviewers

The sunburst blue dial is a standout feature. Limited water resistance is a shared concern.

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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