Feature:1. Clear LED Screen: LED backpack features built in 64 x 64 full color waterproof screen, perfect for displaying text, static and dynamic images, not for videos. Ideal for commuting, traveling, or as a surprise gift choice for family and friends. Suitable for portable billboards, holiday greetings, signage, and commercial promotions.2. App Control: Use app to control this LED laptop backpack. Change all settings, add custom art, photos, or download other artwork or animations through the app. Suitable for iOS and for Android systems, available for free download for Google Store or for APP Store.3. Convenient Use: Requires a 10000mAh power bank to power the backpack for up to 6 hours. Power bank not included. Built in USB port (inside the backpack for connecting power bank. Download the app and use the app for customization.4. Large Capacity: The DIY LED backpack offers ample storage space with multiple compartments for storing items like phone, wallet, water bottle, cosmetics, glasses, etc. Convenient and practical with side pockets for water bottle, umbrella, etc.5. Adjustable Strap and Versatile: The programming LED backpack features adjustable shoulder strap design to relieve shoulder pressure. Can be worn as a single shoulder bag, backpack for comfort in various settings such as parties, music festivals, and more.Specification:Item Type: LED BackpackMaterial: NylonColor: BlackBackpack Type: Single Shoulder/Double ShoulderPower Supply: Mobile Power (Not Included)Power Interface: USBLED Screen Resolution: 64x64App: For SPOTLED (Please search and download on for APP Store or for Google Play)Size: Approx. 25 x 22 x 9cm / 9.84 x 8.66 x 3.54in.Package List:1 x LED Backpack2 x Shoulder Straps