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 Backpack Material: ABS, PC, 1680PVC Application: for LOY EYES APP Power Supply: USB Interface Power Supply Communication Method: Bluetooth Left and Right Eye Screen Resolution: 48x48 Screen Pitch: P2 Size: Approx. 38x18x46cm / 15x7x18in. Package List: 1 x LED Backpack