Emfit QS, sleep tracker with heart-rate-variability
What is included
Hardware: The Wi-Fi version connected to under-mattress sensor with 1,8m (6 ft) cord.
Always free web application: Detailed sleep reports and long term trends up to one year; whole night heart-rate-variability RMSSD, autonomic nervous system balance, full 3-stage sleep classification (REM, deep, light, awake), detailed heart and breathing rates, sleep score, resting heart rate, tossing & turning, and movement activity.
2-Year Limited Warranty
Equipment may be returned for replacement or repair.
Optional, separately paid features: Alerts application for care use, some API integrations, sensor signal waveform visualisation.
PayPal; all major credit cards, also without pre-registration