QUAN ZHIHONG Women&Men High Top USB Charging LED Shoes Flashing Sneaker PU leather Heel measures approximately 1 inches" Notice: The size in us above is for women, if you are man, please look at the size chart carefully, for example: if you are man, your size of foot is 3, you should select the size of 4.5B(M) US., thanks!!! SWITCH INSTRUCTION: Hidden switch button, 1" beside the usb outlet, along the inside hem. Push around and you'll find the "click." Press it to switch on.It starts with steady red light.With each press,it changes to another light mode.Press the switch for 9 times to turn the light off. CHARGE INSTRUCTION: Easy charge like your cell phone with the attached USB charging cable.Switch on the shoes when received and light up until all power gone.Then charge both shoes for 3 hours. LIGHT MODES:1.light on from red(steady)-2.green(st')-3.blue(st')-4.yellow(st')-5.skyblue(st')-6.purple(st')-7.white(st')-8.auto-change mode-9.light off Notice: We had checked every shoes carefully before we send to our customer, it is impossible that it can't work, If you receive the LED shoes can not work, please do not worry, it may have not electricity or the charger is bad, you just give it to charge, it will light up.