This is a fun hat with an LED display. This hat is a cool and popular product. TheControl Hat App can show you what you want. Make the most of your DIY skill. At the party, you are the focus!FeaturesSupported language: English or 1 numbers. Bluetooth connection of the mobile APP.2. Resolution: 12 * 48 = 576 pixels3. Text Mode: The information cover can display 80 characters in English4. Animation Mode: If you need image effects, you can switch the images that come with the system at any time. If you don't like it, you can create the image yourself and save it for next time.5. Music mode: music rhythm display, automatic synchronization of mobile phonemusic 6. Text scrolling function: move left and right, move up and down, flicker, snowflake, etc.7. DIY version: customize the design, draw the animation you want8. LEDcall flashing function 9. Detachable: the removable fabric is a plain 100% cotton beanie. Without the hat, the canvas can be used elsewhere, on backpacks, clothes, shoes, bicycles, cars, anywhere, and it's also cool.Package Contents:1 * Bluetooth LED Smart Cap;1 * USB cable;1 * Detailed User Manual.Note:1* The color of the LED lamp bead is 4 colors.2 * If you don't use it frequently, please charge it every 2 months to avoid battery damage.