Using the Livall C20 smart bike helmet is easy. First, adjust the straps to fit your head comfortably. You can pair your phone with the Bluetooth speakers to play your favorite music while cycling. To turn on the lights, just press the button on the side of the helmet. When you're done cycling, store the helmet in a cool, dry place. Avoid exposing it to extreme heat or cold. Regularly check the straps for any signs of wear and tear, and clean the helmet with a soft, damp cloth. If you're involved in a fall, check the helmet for damage, and replace it if necessary. Also, make sure to keep the battery charged for continuous use of the smart features.