I have measured accuracy of Blood Pressure monitor in Samsung Galaxy Watch 4 with standard medical device.
Please find out complete video in the below link.
Check UNBOX video herehttps://youtu.be/dXB8ZdgYX0cCheck ECG video herehttps://youtu.be/dxgbtb5q7FEBuy herehttps://www.amazon.in/Samsung-Galaxy-Bluetooth-Com...
Blood pressure is not a precise measurement by any device. It varies all the time and measurement is technique sensitive. Get three in a row and use the average.