To tell you clearly, it's not difficult at all. Don't choose an instrument with many fancy buttons, many impractical functions and complicated operation! ! ! Good instruments are designed for you, and there is no need to do complicated operations. The intermediate frequency therapeutic instrument I use is easy to operate. It's simple to use, not complicated at all. There are instructions in it. An illiterate old man like me can remember how to use it after teaching it twice, with fewer buttons and convenience. Three steps, one step in place, once 1, patch after startup. Step 1: You need to press the Add button (Prescription button) first (select the number of prescriptions to be treated). Step 2: Just press the Start button to start the treatment. Step 3: Press the Add button (increase strength) and take it off after 20 minutes, which is very convenient. You can easily get started by following the operation.