4000 mAh rechargeable lithium polymer Grade A battery device.
Great for charging smartphones, MP3 players and tablets with a max output of 5V/2.1A
Dual output allows you to charge 2 devices at the same time.
Battery check button for current status.
Micro-USB input (Android, Samsung, Motorola, HTC, Nokia and others)
Charges via USB cable (included).
Media device not included.