LED Backpack Waterproof Business Laptop Backpack Anti-theft Knapsack Smart School Bag 25*25 LED Display1, Waterproof Fabric, Durable and Abrasion-resistant.
2, Support Subtitles, Images, Animations,Ad.
3, Powered by Powerbank, and control by Cellphone via Wifi.
4, Android and IOS are working with our APP.
5, Big capacity, 15.6inch laptop is adopted.