What this product is
Helio Strap is a device sold by Amazfit.
From the maker's page. See the maker's page ↗ We don't repeat the maker's health claims.
What it measures
Per Gearbrain, it tracks heart rate every second, plus blood oxygen, stress and sleep. gearbrain.com ↗
How well it works in independent tests
Wareable found arm-worn averages and maximums usually within 1-2 BPM of a Garmin HRM 600, and 3-5 BPM off at the wrist. wareable.com ↗
Subscription
Wareable says all core features are free; only some Zepp app premium features cost extra. wareable.com ↗
Battery life
Wareable says the battery is rated up to 10 days and lasted about a week or more in its testing. wareable.com ↗
What the maker offers
Gearbrain says it costs $99.99 and comes only in black. gearbrain.com ↗
Each line rests on a passage quoted word for word from the linked page (hover the link to see it). Accuracy comes only from pages independent of the maker.
About this kind of device
Fitness trackers: watches, bands and rings
Smartwatches and fitness trackers are wrist-worn monitors that people commonly use to count their steps each day.
Main risk: The pages stress that wrist-worn monitors may not count steps as accurately as hip-worn pedometers.
Research stage 2: small studies in people. What it measures and the research →
This is research on this kind of device in general, not proof that this model is accurate or right for you.
Outside reviews
No independent reviews of this product found yet.
This is general information gathered from the sources listed, not medical advice. Talk to your doctor before starting anything new.