21-inch LCD Video Advertising Backpack,1920 * 1080 Resolution Ratio, Human Walking Backpack Digital Billboard (Mobile Version+Touch Screen)

21.5 inch LCD screen: the backpack is equipped with a customized LCD screen and Android system, which can playvideos in mp4, mpg, rmvb, avi, mov, flv and other formats, 1080 *1920Working duration: lt can work for 2-3 hours when fully charged, it uses rechargeable lithium batteryHuman Walking Backpack Digital Billboard: The backpack has a built-in 8000mAh rechargeable batteryMultiple Functions: The product has multiple functions, such as playing videos, displaving images, and reading text. lt can also be used as a advertising machine to promote products or services.Fashion backpak: Adjustable backpack shoulder strap, adiustable screen height at any time, cushy handle, antiscratch design, password lockEasy to operate: the external USB port of the backpack is more convenient to operate, such as changing the contentof the advertising video Perfect for everyday use. superior materials and excellent craftsmanship ensure long-lasting durability.