Why is the measurement data between the Xiaomi Body Composition Scale S400 and the Mi Smart Scale 2 inconsistent?

The Xiaomi Body Composition Scale S400 adopts more advanced dual-frequency technology and algorithms. It has made a new upgrade and iteration in measurement accuracy, updating the number of measurable data items to 25.
There will be some differences between data measured by the new algorithm and the old algorithm, which is a normal phenomenon and does not affect use. When using a scale in practice, it is recommended that you adopt the latest and more friendly features to avoid cross-use that will affect the presentation of data trends.