Neck Face Massager Face Sculpting Tool 3 Colour Modes And Vibration For Facial ?Charging Port Precautions? Due to the curved position of the charging connector?please insert it at a certain angle, otherwise there is no way to insert the charging cable. ?How to Vibrate?Cap on the device head that please be removed before using. This product is set by human body induction switch, when using ,please device head touch your skin and your hand touch one of the silver sensing "rings" on either side for the vibration to work (Can save more electricity! Does not work while charging, does not work while charging!). ?Warm Tips?When charging, charging indication will turn on and flash if there is not enough power. If it is fully charged, it will stop flashing and stay always on (Not available while charging! Does not work when charging! ) ?No Risk Try?if you are not satisfied with our products, please feel free to contact us, we will deal with it within 24 hours.