What is the difference between realme Smart Scale and weight scale?

The realme Smart Scale adopts the BIA bioelectrical impedance method, which integrates the functions of body measurement and body fat monitoring. You can judge the corresponding physical condition according to the given reference data, such as whether the index of your body is normal, whether the current body is obese, etc. The weight scale is only to measure the user's weight, and there is no other monitoring, data analysis and other functions.