NOBILITY Smart Bag NOBB001 Waterproof Backpack  (Black, 17 inch)

Note: There is no mobile power bank 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 bank 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. To use this backpack phone charging system, we suggest purchase of the first mobile power bank.