Side by side

Halios Seaforth IVvsLongines LONGINES AVIGATION BIGEYE

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
LONGINES AVIGATION BIGEYE
LonginesLONGINES AVIGATION BIGEYE
MSRP $4,400

At a glance

9 of 29 specs differ
Diameter
Seaforth IV40mm
LONGINES AVIGATION BIGEYE41mm
Power Reserve
Seaforth IV40h
LONGINES AVIGATION BIGEYE40h
Water Resistance
Seaforth IV200m
LONGINES AVIGATION BIGEYE30m
MSRP
Seaforth IV$765
LONGINES AVIGATION BIGEYE$4,400

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
40mm
41mm
Thickness
12.4mm
14.5mm
Lug-to-Lug
46.5mm
48.7mm
Material
Titanium
Stainless Steel
Water Resistance
200m
30m

Crystal & Dial

1 specs
Crystal
Sapphire (double-domed)
Sapphire

Movement

1 specs
Caliber
Sellita SW200-2
L688.5

Pricing

1 specs
MSRP
$765
$4,400

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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.

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.

LONGINES AVIGATION BIGEYE

Owners and reviewers widely praise the Longines Avigation Bigeye for its unique, asymmetric dial, vintage military aesthetic, and cohesive design, with one reviewer noting its GPHG Best Revival prize win. The tactile chronograph pusher action and reliable L688.2 column wheel movement are highlighted, as is the watch's legibility and versatile strap-swapping potential due to its 20mm lug width. However, criticisms include the 30-minute sub-dial's three-minute hash marks, which some find compromise reading speed, and the lack of drilled lugs. The watch's thickness, around 14.45mm, is noted as typical for its movement, and some owners mention minor QC issues with chronograph hand alignment and a loud rotor. On balance, owners and reviewers rate the Longines Avigation Bigeye highly for its distinctive vintage-inspired design and solid chronograph performance at its price point.

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