Antopos Universal 13000mAh High Capacity Dual USB Portable Power Bank External Battery Charger for iPhone iPad Samsung Galaxy Android Smartphones Tablets PC Bluetooth Speaker (Green) Built-in LED indicates the current battery. 4 lights for 100% battery High capacity (13000 mAh) charges your phone up to 5-6 times or tablet for 1-2 times. Charging cycles: more than 500 times Circuit protection design: overheat, overvoltage, overcurrent, overcharge, over discharger, short-circuit and reverse charging protection It allows simultaneously charge of your phone and tablet at high speed Compatible with almost all devices with 5V input, e.g. smartphones, tablets, PSPs, bluetooth speakers & headphones, GoPro and Google Glass