I've 3 Withings products; Body Cardio, BPM Connect and Sleep.
The scale consistently shows grossly inaccurate heart rate. Typically high by 10-55 beats/min. Today for instance my Apple Watch showed 88 while the scale showed 130. If something as basic as heart rate is this inaccurate, how reliable are any other measurements? More so, how reliable could PWV measurements be?
My confidence in Withings products is quite low.
As well, Sleep will frequently show me as sleeping when I am laying in bed wide awake. Recently I was awake and reading for 30 minutes but sleep showed me as sleeping.