Side by side

Halios Seaforth IVvsPraesidus A-5 UDT

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
A-5 UDT
PraesidusA-5 UDT
MSRP $645

At a glance

7 of 29 specs differ
Diameter
Seaforth IV40mm
A-5 UDT38mm
Power Reserve
Seaforth IV40h
A-5 UDT40h
Water Resistance
Seaforth IV200m
A-5 UDT200m
MSRP
Seaforth IV$765
A-5 UDT$645

Full specifications

Case

4 specs
Diameter
40mm
38mm
Thickness
12.4mm
Lug-to-Lug
46.5mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

1 specs
Crystal
Sapphire (double-domed)
Domed Sapphire

Movement

1 specs
Caliber
Sellita SW200-2
Miyota 9015

Pricing

1 specs
MSRP
$765
$645

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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.

Praesidus A-5 UDT

The Praesidus A-5 UDT is noted for its historically inspired design, featuring an oversized crown cap and chain that pays homage to WW2 canteen watches. Reviewers highlight its functional dial with embossed, Super-LumiNova filled numerals and markers for legibility, alongside 200m water resistance and a 38mm brushed stainless steel case. Some owners find the 11.7mm thickness problematic, describing it as disproportionately tall. The watch's ana/digi functionality and connection to special operations forces are also praised. On balance, owners and reviewers appreciate the Praesidus A-5 UDT for its unique historical design elements and functional dial.

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