Kingsons KS3159W 15.6 inch Men Women Laptop Backpack External USB Charge Waterproof Wearable travel Backpack School Bags

Kingsons KS3159W KS3161W 15.6 inch Men Women Laptop Backpack External USB Charge Waterproof Wearable travel Backpack School Bags

 Model A is KS3159W

 Model B is KS3161W

Note: There is no mobile power comes with the backpack inside.

If you want to use External USB Charge Function, you have to do as follows:

1.Buy a mobile power 

2.Connect your mobile power with the USB interface inside the backpack  

3.Connect your phone with the USB interface outside the backpack

4.Charging begins.

There are 2 kinds of mobile power in the market.

1:Plug in your phone, you can start charging

2:Plug in your phone also need to press button of mobile power then start charging

To cope with this backpack, we suggest purchase of the first mobile power.