Side by side

Halios Seaforth IVvsOak & Oscar The Humboldt GMT

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

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.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

At a glance

18 of 29 specs differ
Diameter
Seaforth IV40mm
The Humboldt GMT39.5mm
Power Reserve
Seaforth IV
The Humboldt GMT56 hoursh
Water Resistance
Seaforth IV200m
The Humboldt GMT200m
MSRP
Seaforth IV$765
The Humboldt GMT$2,175

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
39.5mm
Thickness
12.4mm
12.5mm
Lug-to-Lug
46.5mm
46.8mm
Material
Titanium
316L Stainless Steel
Finish
Brushed
Caseback
Solid screw-down

Crystal & Dial

6 specs
Crystal
Sapphire (double-domed)
Sapphire
Crystal Shape
Double-domed
AR Coating
Underside
Dial Color
Blue
White
Indices
Applied
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Sellita SW200-1
Sellita SW330-2
Beat Rate
0 vph
4 vph
Power Reserve
0h
56 hoursh
Jewels
0
25

Pricing

1 specs
MSRP
$765
$2,175
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