LED Car Sign: Programmable LED Matrix Panel with FPCB Flexible Screen for Displaying Perfect for Cars, Shops,Restaurants and Party Festivals[Easy to Use] Simple setup: connect the device, download the app, and link the LED matrix panel to the app. You can then upload messages or pictures to the panel. [Bluetooth Control] This Bluetooth LED board allows you to program any message, picture, or animation you want. Both colors and scroll speed are customizable. The app is user friendly and comes with a variety of preloaded static and dynamic pictures. It also allows you to create your own