[Foivos]

They are not meant for a precise measurement, but it is useful to monitor a trend over time. In my case, the fat measurement is in line with what I see on the mirror.

Also, if you use only one source of data (ie. the fat measurement of the scale) and do not mix different sources, accuracy is not that important. Since, if there is a systematic error in the measurements, it applies to all the measurements and the trend is always true, even if there is also a small randomness component.

The main selling point here is convenience. You can do a somewhat decent fat measurement in your bedroom. The Dexa can not beat that.

On the other hand, my model (one I bought in 2015), also supports heart rate and this is total rubbish. To the point that it might give me 120 bpm at rest, then go on and do a workout and immediately after the work out, it reports 70.