Feature:1. [Ample Storage Space] This LED backpack features a large zip pocket for your laptop, and multiple small compartments for items like tissue, key, tablet, umbrella, and more.2. [Supports Various Formats] The LED backpack uses 48x48 full color dot screen that supports various formats, including text, images, and GIFs, displaying sharply and vibrant visuals.3. [Programmable LED Screen] The screen can connect to phone through Bluetooth, allowing you to edit text, animations, and images on for LOY EYES APP for a cool, personalized display.4. [USB Powered] This LED motorcycle backpack requires a power bank connection for use through the built in USB port in the backpack. (Power bank not included.)5. [Waterproof Hard Shell] The hard shell is made from ABS, PC, and 1680PVC, waterproof and aerodynamic compliant. Breathable sponge shoulder straps are adjustable for a comfort fit, the button design on the chest can make you safer while cycling.Specification:Item Type: LED BackpackMaterial: ABS, PC, 1680PVCApplication: for LOY EYES APPPower Supply: USB Interface Power SupplyCommunication Method: BluetoothLeft and Right Eye Screen Resolution: 48x48Screen Pitch: P2Size: Approx. 38x18x46cm / 15x7x18in.Package List:1 x LED Backpack