The science
The science behind the HLTH Band
HLTH Band is a light, screen-free band that tracks your heart, sleep, stress and activity, then syncs it all to your phone. These pages explain what each number means, how the band reads it and what the research says about why it matters.
Built aroundeveryday wear
We designed the band for everyday people, not elite athletes. It’s worn day and night, has no screen to distract you, and every feature comes with one price: no subscription.
- 288
- readings a day (every 5 minutes)
- No
- subscription
- Up to
- 30days
- battery
- 0
- screens
Inside the band
What’s inside
Optical sensors
light shone through the skin reads your pulse and blood oxygen.
Motion sensor
tracks movement, steps and how still you are at night.
FlowSense™ motion filtering
filters out movement noise so heart data stays usable as you go about your day.
Fit tip
wear it snug on your non-dominant wrist, a loose band gives weaker data.
What HLTH Band tracks
Sleep
REM, deep, light and awake time, a nightly sleep score and continuity score.
Learn more
Heart rate
real-time readings on tap, a daily resting trend and training zones.
Learn more
HRV
the gaps between heartbeats, tracked overnight.
Learn more
Stress
four levels, from relaxed to high, with averages and spikes.
Learn more
Activity
steps, calories, daily goals and 30+ sport modes.
Learn more
Blood oxygen
SpO2 trends day and night.
Learn more
Cycle
log your period and see predictions (wellness only, not contraception).
See it for yourself
One band, every feature, no monthly fee. Wellness insight you can read at a glance.
