User instruction: The instruction is in English, if you need instructions in other languages(e.g. Russian, Spanish, Portuguese, French, German, etc.), please contact us and leave your email. 4-Mode: 1. eye protection mode: (long press switch/mode key - power on) Massage function + music SALORIE Online Store 2. Nursing mode: (short press on/mode key - switch) Massage function + music + hot compress function 3. Strong mode :(short press on/mode key - switch) Massage function + music + hot compress function + vibration massage SALORIE Online Store 4, refreshing mode: (press the power on/mode button to change everything) Hot compress function + music (If you don't need music, you can also press the music button to stop the music) Function: 42-degree Hot compress; Built-in Music function+Bluetooth Music function; Multiple frequency vibration massage; One key operation; Double pressure; 180° folded; Strong air pressure massage; pain, artificial heart and lung, etc., not suitable for this instrument.