FTC: Affiliate Disclosure: All links pay commission
EMFIT QS has been upgraded to include new sensors that can be embedded into mattresses. This is a development from the previous system (reviewed below) that allowed the sensor to reside underneath the mattress – whilst still working ! I use one myself.
The new sensor is advertised to be sensitive enough to distinguish between the heart beats of two users in the bed.
Source: EMFIT
EMFIT REVIEW QS, Gen 2 HRV 💤 Sleep 💤 Monitor, Sleep Tracker [2022 version]
