Anker Powercore Select 20000mah Power Bank.

Dual output ports allow simultaneous charging of your devices. Get the fastest charging speed of 18W when charging a single device, and 12W each port when charging two devices. Made of durable rubberised polycarbonate Shock resistant MultiProtect safety system provides superior protection for you and your device Compatible with most USB-charged devices Includes USB-A to Micro-USB cable