Easy to use: With the free app, you can connect the glasses to your smartphone via bluetooth to enable the bluetooth function to connect to the app and control the image content instantly. The app can support iOS and Android.Expressyourself features include glowing customizable patterns, customizable text, writing any message you want, drawing, animation. A glowing toy for adults and kids, perfect for bars, clubs, electronic dance parties, LED parties, halloween, fancy dress parties, carnivals, etc. Once you have it, you will be the focus and superstar of the party. Product Features: Pattern animation (22 animations + 20 pictures and DIY support) Microphone rhythm (recognize external sounds and choose rhythm effects) Music rhythm (play local music on your phone and choose rhythm effects) Graffiti editing (freely adjust brush color ) text editing and color adjustment. Material: The glasses are made of high-quality ABS plastic and 432 LED colored light beads, which have no radiation and no effect on sight. It can be used for about 5 hours when fully charged. The USB rechargeable full-color sparkling glasses have a built-in rechargeable battery, which can work for about 5 hours (3 hours) when fully charged, and can be charged through adapters, power banks, computers, etc. Input voltage and current must be 5V/1A. When charging, you will see a red light, and when fully charged, the red light will turn off.