Description : Details Report Item: NR SPARK LED Knight Backpack with Eye Motorcycle Helmet Bluetooth APP Control Waterproof Hard Shell Laptops Bags LED Backpack ?DIY ?Modify the pattern at will, leave the laptop backpack as you wish. It has a stylish and cool design that is easy to spot in a crowd. The Cool LED Crelander Knight Smart Backpack is suitable for a variety of scenes such as traveling, walking, walking, going to school .... ?Multipurpose?: The size of the LED backpack is 15*7*18in which has enough storage. Large zipped pocket like a laptop bag, put a tablet; the interior has a number of small independent compartments, can effectively store cosmetics, fabrics, keys, textbooks, mini ipad, mobile phones, umbrellas, some sports equipment, etc.... ?Material?LED rider smart backpack appearance purchase 3D hardcore waterproof material; The back width using 1680pvc,48*48 color matrix screen, support text, images, GIF and other formats; adjustable strap size; breathable material for the back ?Cool Gift?The Knight LED Backpack with DIY Screen is also the best gift for you or for others on Christmas, Birthday, Valentine's Day .... ?How to use?Search your mobile phone or directly scan the code to download the app, connect the mobile power supply through the built-in USB data port on the back, turn on Bluetooth and scan the QR code to link the backpack. You can connect the device and use it. Please note that for transportation safety, we do not provide power bank. Meet the Crelander Pix Knight Backpack A smart backpack designed to brighten up your day with some Pixel LED light. It is a perfect urban and portable backpack for men and women that allows you to customize your design while on the go. From the moment you receive your Pixel LED backpack, you become a nerd, an artist, a raver or all at once. A personality laptop backpack for those who dare to be different!