Side by side

Halios Seaforth IVvsZelos Comet 39

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
Comet 39
ZelosComet 39
MSRP $2,499

At a glance

11 of 29 specs differ
Diameter
Seaforth IV40mm
Comet 3939mm
Power Reserve
Seaforth IV40h
Comet 3940h
Water Resistance
Seaforth IV200m
Comet 3950m
MSRP
Seaforth IV$765
Comet 39$2,499

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
39mm
Thickness
12.4mm
7.6mm
Lug-to-Lug
46.5mm
39mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

2 specs
Crystal
Sapphire (double-domed)
Domed Sapphire
Dial Color
Blue
Tantalum LE

Movement

2 specs
Caliber
Sellita SW200-2
ETA/Peseux 7001
Type
Automatic
Manual

Pricing

1 specs
MSRP
$765
$2,499

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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.

Zelos Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

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