The Wristwatch Field Guide

Halios Seaforth IV (Titanium)

The Halios Seaforth IV (Titanium) is a current-production diver watch with a grey titanium (grade undisclosed) case. It measures 40.0 mm across, 12.4 mm thick, 46.5 mm lug to lug, and is water resistant to 200 m. Inside is the Sellita SW200-1 automatic movement, with ~38 h power reserve. Complications: Time only. Priced from $900 (approx). Brand origin: Canada.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
–
Type
Diver
Price
$900 · approx
Case diameter
40.0 mm
Thickness
12.4 mm
Lug-to-lug
46.5 mm
Water resistance
200 m
Weight
–
Origin
Canada
Movement
Automatic
Caliber
Sellita SW200-1
Power reserve
~38 h
Complications
Time only
Material
Titanium
Grade / type
Titanium (grade undisclosed)
Colour
Grey
Hardness
–
Construction
–
Surface treatment
None (brushed)
Caseback
Titanium
Nickel-free
No (steel contact)
Bracelet / strap
Titanium (steel clasp) or rubber
Matching bracelet
–
Crystal
Double-domed box sapphire, AR coated
Display back
No
Dial
Multiple (40mm fixed / 41mm rotating bezel)
Lume
Globolight + Super-LumiNova
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: aBlogtoWatch Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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Alternatives to the Halios Seaforth IV (Titanium)

HelsonShark Diver 38 Titanium$75038.0 mmDiversame category · same style · similar price · similar sizeSeagull Ocean Series Pro Ice Wing Titanium 43mmSeagullOcean Series Pro Ice Wing Titanium 43mm$86943.0 mm13.5 mm thick110 gDiversame category · same style · similar price · similar sizeRedux & Co. HONNR A-9Redux & Co.HONNR A-9$99537.0 mm12.75 mm thickDiversame category · same style · similar price · similar size
CertinaDS Action Diver 40.5mm Titanium$1,06040.5 mm14.1 mm thick124 gDiversame category · same style · similar price · similar size
CertinaDS Action Diver 38mm Titanium$1,10038.0 mm13.2 mm thick86 gDiversame category · same style · similar price · similar size
OnticUtility 40 (TiX Titanium)$79940.0 mm12 mm thickDiversame category · same style · similar price · similar size

Frequently asked questions

Is the Halios Seaforth IV (Titanium) nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the Halios Seaforth IV (Titanium)?

The Halios Seaforth IV (Titanium) has a grey titanium (grade undisclosed) case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the Halios Seaforth IV (Titanium)?

It is 40.0 mm in diameter, 12.4 mm thick, 46.5 mm lug to lug, and water resistant to 200 m.

How much does the Halios Seaforth IV (Titanium) cost, and is it available?

It is current-production and lists from $900.

All titanium and ceramic Halios watches · Titanium and ceramic diver watches · All 1040 watches

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