Bags Backpack With USB Charging Interface-Black

 A new external USB charging connector has been added to the backpack. You can connect the phone charging cable and charging power supply (this package does not include a charging power supply and must be independent). Practical and practical. You can play with your phone while walking. Don't be afraid to charge your phone anywhere.How to use the USB interface? The first step is to bring a mobile charging source and put it in your bag. Connect to the USB interface in the backpack using a data cable. In the second step, insert the phone charging cable into the USB charging port outside the backpack. Step 3, connect your phone and you can charge it.