I bought the device on the advice of a urologist, but there are also gynecological indications (prolapse). My friends use cheaper analogues, but I decided to buy Tonis, because I intuitively trusted the company. I was not disappointed. that has a battery, you don’t need to worry that the batteries will run out at the wrong time, that the work of the myostimulator will go astray. I am satisfied with the product, I will supplement my review later.