Emfit QS Active Wi-Fi monitor for sleep

Sleep Monitor - in the form of a thin flat strip in a padded case, installs under the mattress, easy to re-install or change location, integrated pressure and capacitive touch sensors, ballistic measurement (BCG), evaluates sleep cycles, sleep time and efficiency, breathing activity, body movements, works with heart rate variability data (HRV), detailed charts and sharing options, printing, lifestyle modification based on measured data, user account accessible from any web browser (no application), data transfer via Wi-Fi, automatically starts and finishes recording, Wi-Fi 802.11 b/g/n 2.4GHz (does not support 5GHz network), cable length 1.8m, protection class IP20, two LED status indicators