Awe-tek Power Supply 12000mAh Dual-Port USB Charger for Samsung Galaxy, Android Phone ,Smartphone ,Tablets, PC and Bluetooth Speaker-White 1.High Capacity 12000mAh for long life,reliable use up to 500+ battery charge cycles 2.High efficiency of power conversion 3.Double USB output,charging two devices at the same time 4.The four leds display battery status 5.Super protection: overshoot, over-discharge, short circuit, over voltage, leakage, and many other protective functions