1-Thinnest and beautiful appearance 2-charge quick & effectively 3-fit for iPhone4/4s; 4-color in white&black 5-CE,ROHS,FCC Unique design & thinnest External battery charger/backup battery charger/battery charger case for iPhone4/4s >>>specifications:1> Input: 5V-0.5A 2> Output: 5V-0.5A 3> Cycling times:at least 500 times 4> charging time: 3-5Hours 5> Capacity: 1700mAh6> Warranty: 12 months >>> ...