Side by side

Halios Seaforth IVvsLongines LONGINES SPIRIT ZULU TIME

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
LONGINES SPIRIT ZULU TIME
LonginesLONGINES SPIRIT ZULU TIME
MSRP $5,200

At a glance

11 of 29 specs differ
Diameter
Seaforth IV40mm
LONGINES SPIRIT ZULU TIME39mm
Power Reserve
Seaforth IV40h
LONGINES SPIRIT ZULU TIME40h
Water Resistance
Seaforth IV200m
LONGINES SPIRIT ZULU TIME100m
MSRP
Seaforth IV$765
LONGINES SPIRIT ZULU TIME$5,200

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12.4mm
13.5mm
Lug-to-Lug
46.5mm
46.8mm
Lug Width
20mm
21mm
Material
Titanium
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

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

Movement

1 specs
Caliber
Sellita SW200-2
L844.4

Pricing

1 specs
MSRP
$765
$5,200

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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 SPIRIT ZULU TIME

Owners widely praise the Longines Spirit Zulu Time for its superb finishing, smooth crown action, and mesmerizing ceramic bezel, with many noting its premium pilot/sporty design and unique dial details. The movement is consistently lauded for its extreme accuracy, running at 0 to +1 second per day, and the watch is considered to offer remarkable value that punches above its price point. However, the bracelet is criticized by multiple sources for its push-pin adjustment and limited micro-adjustment holes, and the 42mm case size with a 49.3mm lug-to-lug is noted as potentially large for smaller wrists, though some users express a preference for the 39mm size. One owner reported their movement failed within the first year and found setting the date a "nightmare," while another owner notes minor criticisms like the date window being slightly off-center. On balance, owners and reviewers rate the Longines Spirit Zulu Time highly for its impressive finishing and accuracy at its price point.

From video reviewers

The 39mm case size is a significant strength, addressing previous concerns about thickness. The value proposition within the GMT market is also a shared positive point. No consensus on weaknesses was reached.

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