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 use.
To track long-term vascular trends during sleep, the ring must first be calibrated using a conventional blood pressure monitor.
Health data is synchronised via Bluetooth Low Energy, supporting both iOS and Android smartphone systems.