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 *1920
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Working duration: lt can work for 2-3 hours when fully charged, it uses rechargeable lithium battery
Human Walking Backpack Digital Billboard: The backpack has a built-in 8000mAh rechargeable battery
Multiple 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, comfortable handle, antiscratch design, password lock
Easy to operate: the external USB port of the backpack is more convenient to operate, such as changing the contentof the advertising video
