Feature: 1. FASHIONABLE DESIGN: The unique design of the strap buckle in this LED backpack has a special buckle that can be adjusted to a single shoulder or double shoulder backpack mode at will, allowing you to match multiple styles, making you a fashion expert. In addition, there is a comfortable soft handle for holding, making it more convenient for you to use 2. ATTRACTIVE AND COOL: Get ready to light up your backpack with incredible LED lights. Perfect for carnivals, parties, discos, hip hop events, concerts, masquerade parties, performances, gatherings, role playing, and Halloween parties. When you wear an LED backpack, you will become the focus 3. EASY TO USE: Only need 3 steps to pair LED backpack: Plug in the power bank, pair the Backpack to your smartphone device by Bluetooth connection, use the APP to control displayed images, animations or text right on your Backpack, so easy 4. HIGHLIGHT FUNCTION: 176x176MM 64x64 dots 4096 LED beads high brightness dot matrix screen, use LED light backpack to control your style. With dozens of dynamic display modes and static images, you can easily customize the style for any occasion. Simply connect the LED backpack to Bluetooth using a dedicated application to unleash your creativity. This application allow you to personalize wave display of images, animations, graffiti, text, and even sound 5. SMALL SIZE AND LARGE SPACE: The backpack size is 9.8x8.7x3.5 inches, small and exquisite, lightweight and fashionable, easy to store, such as water bottles, books, files, wallets, pens, phones, tablets, power banks, laptops, etc. Specification: Item Type: LED Backpack Power Supply Interface: USB Interface LED Light Color: Colorful LED Matrix: 64x64 Points Communication Method: Phone Bluetooth input Application Software: For SPOTLED APP(please download from for App Store or for Google Play) APP Support System: For Android, for iOS. Package List: 1 x Backpack 2 x Shoulder Straps