Kingsons 13.3" 15.6" 17.3" inch Men Women Laptop Backpack Travel Business school Bags Waterproof Wear-resistant Backpacks

Kingsons 13.3" 15.6" 17.3" inch Men Women Laptop Backpack Travel Business school Bags Waterproof Wear-resistant Backpacks

Size:  KS3140W-13inches (27cm*16cm*43.5cm)

          KS3140W-15inches (31cm*19cm*46cm) 

          KS3140W-17inches (37cm* 22cm*50cm)

          KS3144W-15inches (31cm*13cm*46cm)

 Note: There is no mobile power battery 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.