Titanium · No Screen · 7-Day Battery
Halo reads your sleep, recovery and heart rate through titanium — no screen to check, no subscription to pay. Just quietly accurate, all day and night.
Backed by performance-first teams
Three signature signals
No dashboard overload. Halo distills your body into three numbers that matter — and never asks for a monthly fee to see them.
A single number built from your stages, restfulness and timing — so you know how last night really went, at a glance.
HRV, resting heart rate and body temperature — fused into one readiness signal that tells you whether to push or rest.
Every insight Halo can measure, unlocked at checkout — for as long as you own the ring. No paywalls that appear after month one.
The moment it happens
Four hundred times a night, Halo's sensors take a reading through your skin — no wrist strap, no charging anxiety, no screen pulling your attention.
Reads blood flow through the finger to capture heart rate and blood oxygen, 100 times per second.
Detects skin-temperature shifts as small as 0.1°C — early signals of illness, stress or cycle changes.
Distinguishes REM from deep sleep and counts every step — without ever touching your wrist.
Aerospace-grade, hypoallergenic and waterproof to 100m — engineered to disappear on your finger.
One price. Own it.
Halo Titanium Ring
One-time payment · Yours forever
Ships in 2–3 weeks · Free returns within 30 days
Questions
No. Every insight Halo can measure — sleep, recovery and heart rate — is unlocked the moment you set it up, for as long as you own the ring. No monthly fee, ever.
Up to 7 days on a full charge, depending on usage. The included charging case holds three additional charges, so you can go weeks between outlets.
Because checking a screen is a distraction, not a data point. Halo works quietly in the background and hands you the summary in the app when you actually want it.
Halo samples heart rate, temperature and motion continuously through the night to build your sleep stages and recovery score, validated against clinical-grade reference devices during development.
Yes — the titanium shell is rated to 100m, so you can shower, swim and train without taking it off.
Halo ships in sizes 5 through 13 across four finishes. A free sizing kit is included with every pre-order so you can confirm your fit before your ring arrives.