Hello， friend Welcome to my store Note: 1 ， when charging， slowly pull the plug slowly. 2 ， switch hidden inside shoes，it nearby the USB port，you can press it to fix the shoe on one color，or flashing. 3 ， When charging， the light will automatically turn off the soles until charging is complete. 4 ， a full charge is 3 hours 5 ， Do not wash， clean， if needed， can be colorless shoe polish / cleaner.