Very good100/100
- without subscription
- Very long battery life
- practical charging case
- detects signs of sleep apnea and high blood pressure
- Vibration motor barely or rarely noticeable
- The ring's LEDs can be distracting while sleeping
Offering an operating time of up to 14 days, the smart ring delivers comparatively high energy efficiency during daily use.
To track long-term vascular trends during sleep, the ring must first be calibrated using a conventional blood pressure monitor.
Health data synchronisation is supported via Bluetooth Low Energy for both iOS and Android smartphone systems.