Why is the measuring time of the Xiaomi Body Composition Scale S400 so long?

The Xiaomi Body Composition Scale S400 adopts dual-frequency fat measurement technology, which is more accurate. A complete measurement is expected to take 30 seconds. After weighing, it will measure body weight, body fat, and heart rate in sequence with fat measurement taking 2 seconds and heart rate measurement taking 12 seconds. If you don't need to measure your heart rate every time, you can turn off the heart rate measurement switch in the Mi Home/Xiaomi Home APP, which can shorten the single measurement time by half.

Does it help?

Yes