I thought this reliable balance but it is not.
Indeed, I followed my weight steadily and got some surprising differences and especially the calculations of fat, muscle and water masses were not logical (an intense week of sports and diet and I had more mass fat that initially ?!).
Finally, the scale system remembers your weight! If you weigh yourself two minutes and so on, you will always have the same weight. Come back in ten minutes and it will not be the same. Reweigh you then two minutes later, and this is the new weight that appears ...
Better, I deliberately took my cat in my arms to break the restraint mass. I then re-weighed me and then I had a new weight 400g with goodwill and reweighing me a row, it is this figure that there is now posted all the time. The balance therefore has a memory.
Unable to follow without being discouraged. Indeed, how to know if you have lost weight or taken because the scale varies enormously.