I bought the scale for the reason, because they are considered one of the few is operated with "normal" AAA batteries and therefore the follow-up costs are low. My previous was powered by CR2032, which had to be changed every 2 weeks without that one has actually used the scale. It works perfectly and looks chic. only one thing I have to wonder. On the glass surface is sinngemäßt "Caution might be smooth," Why ??? Why do you build a level where the surface smoothness is so you slip in the worst case. Then I completely fail to understand, but still there 5 stars