3200mAh Portable USB External Rechargable Backup Battery Power Bank Charger Flip Case Cover For Samsung Galaxy i9500 S4 Smart cover available with a Stylish slim decent & practical backup shell, Kickstand Ideal for watching videos, reading, browsing web; Perfect match for your lovely new Galaxy S4 Environmentally-friendly materials, ABS hard case with soft leather cover prevent your smart phone and screen from scratches, dust and other damage Rechargeable power capacity external battery extends the working time of your smart phone; 500+ recharge cycles Smart LED indicator--indicates charging mode & current battery life and shows charging status at the same time; Short Circuit/Over Charge protection Input Voltage: 5V, Input Current: 1000mAh; Output 5V, 800mAh ; Capacity: 3200mAh; Charging time: about 1.5 hour