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
With an operating time of up to 14 days, the smart ring offers comparatively high energy efficiency during everyday use.
To track long-term vascular trends during sleep, the ring must first be calibrated using a traditional blood pressure monitor.
Health data synchronization via Bluetooth Low Energy is supported for both iOS and Android smartphone systems.