This item was given to me several years ago. I don't know how many times it was used, but I haven't used it. Both battery and AC adapter power worked. I haven't actually used it, so I'm not sure, but I will not accept any claims after arrival. The cord in photo 9 is a little dirty. The skin-adhesive sheets expired in 2015, so they are included as a bonus. Please purchase new ones. SHAPE BEAT X Dinos Corporation INNER EMS