I  perhaps "used" this scale one time, after I received it and just to see if it was working. When I went to really use it today I had a dead screen plus, had missed the return window by seven days, per Amazon. (The 3 volt batteries tested out satisfactorily at 2.87 and 2.92 volts.) I guess this is what happens when you buy an inferior product, which the price alone should have indicated to me!