Halios Seaforth IV (Titanium)
Halios was founded in Vancouver in 2009 by Jason Lim, one of the original microbrands, and aBlogtoWatch calls the Seaforth perhaps the one microbrand watch that has become an icon. The fourth generation was the first offered in titanium: 40 mm across with a fixed bezel or 41 mm with the rotating one, 12.4 mm thick including the double-domed sapphire and 46.5 mm lug to lug, brushed with polished chamfers on the drilled lugs, and rated to 200 m. The rotating bezel is a 120-click sapphire insert, fully lumed, in dive or 12-hour form. The dials are lacquered or galvanic brass in a range of colours, with Globolight markers and blue C3 X1 lume. Inside is the Sellita SW200-2, a no-date automatic with 65 hours of reserve. It ships on rubber, and a titanium bracelet with a steel clasp is available.
Written 28 September 2026 from Halios and aBlogtoWatch.

- Type
- Diver
- Case diameter
- 40.0 mm
- Thickness
- 12.4 mm
- Lug-to-lug
- 46.5 mm
- Origin
- Canada
- Movement
- Automatic
- Caliber
- Sellita SW200-2
- Power reserve
- 65 h
- Complications
- Time only
- Colour
- Grey
- Surface treatment
- None (brushed)
- Finish technology
- Natural finish
- Caseback
- Titanium
- Nickel-free
- No (steel contact)
- Bracelet / strap
- Titanium (steel clasp) or rubber
- Crystal
- Double-domed box sapphire, AR coated
- Display back
- No
- Dial
- Blue, plum, yellow, pink, black, and grey colourways
- Dial colours
- Black Grey Blue Yellow Salmon Purple
- Lume
- Globolight + Super-LumiNova
- Availability
- Offered
- Status
- Current
- Not published
- Reference, Weight, Hardness, Construction, Matching bracelet
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Frequently asked questions
Is the Halios Seaforth IV (Titanium) nickel-free?
No. At least one part that touches the skin is steel, usually the caseback or the clasp, and steel carries nickel, so the guide does not list it as nickel-free.
What grade of titanium is the Halios Seaforth IV (Titanium)?
Titanium, with no grade stated. The caseback is titanium too. The record is at medium confidence, so check the maker's page before relying on it.
What size is the Halios Seaforth IV (Titanium)?
The case is 40 mm across, 12.4 mm thick and 46.5 mm from lug to lug. It is water resistant to 200 m.
How much does the Halios Seaforth IV (Titanium) cost, and is it available?
It is in production, at a list price of $900.
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