Side by side

Glycine Combat Sub Box CeramicvsHalios Seaforth IV

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

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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.

Glycine Combat Sub Box Ceramic

Owners widely praise the Glycine Combat Sub Box Ceramic for its exceptional thinness at 10.4mm for a 42mm diver, perfect proportions for small wrists, and unique, non-homage aesthetic, with some considering it the best dive watch under $400 due to its superior finishing and value. The case shape, dimensions, and drilled lugs are also highlighted as positives, and the dial is legible with good lume on the hands. However, reviewers and owners consistently flag sub-par lume on the markers that fades quickly, and an inconsistent power reserve. Some owners report the stock strap or bracelet is subpar, and one owner experienced the bezel detaching after a light bump, questioning build quality. Accuracy figures vary, with one owner noting it runs about 2.5 seconds fast per day, while another reports an inconsistent power reserve. On balance, owners rate the Glycine Combat Sub Box Ceramic highly for its thinness, unique design, and value, despite concerns about lume and strap quality.

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.

At a glance

17 of 29 specs differ
Diameter
Combat Sub Box Ceramic41mm
Seaforth IV40mm
Power Reserve
Combat Sub Box Ceramic38h
Seaforth IV
Water Resistance
Combat Sub Box Ceramic200m
Seaforth IV200m
MSRP
Combat Sub Box Ceramic$1,800
Seaforth IV$765

Full specifications

Case

6 specs
Diameter
41mm
40mm
Thickness
12.75mm
12.4mm
Lug-to-Lug
46.5mm
Material
Ceramic
Titanium
Finish
Caseback

Crystal & Dial

6 specs
Crystal
Sapphire
Sapphire (double-domed)
Crystal Shape
AR Coating
Dial Color
Grey
Blue
Indices
Lume
Luminous
None

Movement

4 specs
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
0h
Jewels
26
0
Complications
Date
None

Pricing

1 specs
MSRP
$1,800
$765
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