Side by side

Halios Seaforth IVvsSugess Tourbillon Master S454

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
Tourbillon Master S454
SugessTourbillon Master S454
MSRP $999

At a glance

13 of 29 specs differ
Diameter
Seaforth IV40mm
Tourbillon Master S45441mm
Power Reserve
Seaforth IV40h
Tourbillon Master S45440h
Water Resistance
Seaforth IV200m
Tourbillon Master S4545m
MSRP
Seaforth IV$765
Tourbillon Master S454$999

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
40mm
41mm
Thickness
12.4mm
8.9mm
Lug-to-Lug
46.5mm
44.9mm
Material
Titanium
Stainless Steel/Rose Gold
Water Resistance
200m
5m
Caseback
Solid
Display

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW200-2
ST8000
Type
Automatic
Manual
Beat Rate
28,800 vph
3 vph

Pricing

1 specs
MSRP
$765
$999

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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.

Sugess Tourbillon Master S454

Owners widely praise the Sugess Tourbillon Master S454 for its attractive dial finishing, sharp case edges, and the visual appeal of its genuine tourbillon, especially considering its price point. Specific strengths highlighted include a delicate 38mm size with 11.5mm thickness and a crisp winding feel. However, multiple owners note accuracy issues, with figures ranging from +6 to +11 seconds per day and one report of -12 seconds per day. Concerns are also raised about the movement's finishing upon close inspection, the lack of internal anti-reflective coating causing reflections, a small crown that makes winding cumbersome, and potential long-term durability and serviceability challenges. The 24-hour complication is not independently adjustable, and water resistance is limited to 50m. Overall, owners rate the Sugess Tourbillon Master S454 highly for its impressive tourbillon and finishing at the price, despite some noted accuracy and finishing caveats.

From video reviewers

The value proposition of a functional tourbillon movement under $600 is a significant strength. Reviewers noted issues with the bracelet and wearability.

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