Aerospace-grade titanium shell, hand-polished to 2.9mm thick and 4 grams light. Halo disappears on your finger the moment you put it on — and survives everything you forget to take it off for.
Halo reads your body overnight and turns it into three numbers you actually understand: Sleep, Readiness, and Recovery.
REM, deep, and light sleep tracked to the minute.
Continuous resting and overnight HR, no chest strap.
Overnight SpO2 trends, flagged when they drift.
Skin temp deviation, useful days before you feel it.
One number each morning for how hard to push today.
Passive tracking that never needs a workout mode.
No nightly charging routine, no dead battery on the morning it matters.
Matte Black, Polished Silver, or Rose Gold — same titanium underneath.
Same sensors. Sport adds a titanium-ceramic bezel built for daily training.
| Halo | Halo Sport | |
|---|---|---|
| Battery life | 6 days | 5 days |
| Water resistance | 50m | 100m |
| Bezel material | Titanium | Titanium-ceramic |
| Workout auto-detect | — | Yes |
| Price | $299 | $349 |
"The first wearable that actually made me change my bedtime. I forgot I was wearing it by day three."
— Halo user since 2025Free sizing kit shipped before your ring. Free returns within 30 days.
