What this product is
Ultrahuman Ring PRO is a device sold by Ultrahuman.
From the maker's page. See the maker's page ↗ We don't repeat the maker's health claims.
What it measures
The maker says the Ring PRO tracks sleep duration, resting heart rate, restfulness, and sleep stages including REM, Deep and Light. ultrahuman.com ↗
The maker says it measures finger skin temperature during sleep and tracks deviations from a rolling baseline. ultrahuman.com ↗
Subscription
A comparison site lists no subscription for the Ring PRO, which the US store sells at $479. sensai.fit ↗
Battery life
The maker says the PRO Charger gives up to 45 days of battery life and up to a year of ring data storage. ultrahuman.com ↗
What the maker offers
The maker says the ring comes with the PRO Charger case, which works across all Ring PRO sizes. ultrahuman.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.