Besiter 20000mAh 2-USB Port 2.1A Large Capacity External Power Bank Charger Battery for iPhone iPad Samsung HTC Sony LG

Features:
Premium Li-polymer battery cell, safer, stylish than ever.
20000mAh capacity, enormous energy for your device.
Soft skin and perfect size, make it comfortable and portable.
Well-designed dual USB ports 2.1A high-speed output charges your devices with a fast yet smooth experience.
For a convinient life, it can be charged and charge your device at the same time.
Intelligent charge, detect the input electric current demand of different devices.