LED Baseball-Themed Backpack with Pixel Display - Nylon, Casual Style, USB Charging, App Control, Adjustable Straps for Daily Commute & Leisure - Bright Yellow with Black Accents, Adjustable Backpack|Gaming Accessory|Usb Powered Bag

LED Smart Laptop Backpack Model: T2/T3 Features: Supports Text, Images, and GIF Animations Screen Resolution: 64x64 Screen Dimensions: 25x25 cm Dot Pitch: P3.75 Power Source: USB Charging Input: 5V/2A Control Method: APP Control Important: This LED backpack needs to be connected to a power bank for operation, which is not included with the product. You will need to acquire your own power bank.