Versatile LED Hat Cap: Crafted from cotton, this hat features a multicolor LED scrolling sign. Perfect for a wide range of events including concerts, rave festivals, bars, clubs, and themed parties like Halloween and Mardi Gras. It's not just a hat, it's a statement piece for any festive occasion. Interactive Smart LED Sign Hat: Easily programmable via Bluetooth using a smartphone app that supports Multilingual, ensuring a user-friendly experience that's accessible and fun for everyone. Innovative Detachable LED Design: The flexible LED screen is removable for easy cleaning of the hat. This versatile screen can also be attached to backpacks, clothes, shoes, bicycles, or cars, transforming ordinary items into eye-catching accessories. DIY Customization and Display: Show off your creativity with pixels to display text, drawings, animations, and even sync with a music equalizer. Light up your life and become the center of attention with this cool, customizable hat. Long-Lasting Rechargeable Battery: Enjoy 6-8 hours of display time after just 2-3 hours of charging. Hat size: 260 x 180 x 145mm LED screen size: 160 x 35mm Communication method: Bluetooth mobile phone APP (supports Apple IOS system and Android system) Language: English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, Spanish Power supply: 3.7v polymer lithium battery (USB charging) Colour:black Material:Cotton Package Contents: 1 * LED cap 1 * USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.