... case 2 in 1 combo features ,perfect solution for iphone signal problems. 2,Elegant design and use friend Product Specifications ... Output:5V/0.5A6. Charging time:3-5hr1,Compatible with Iphone, ipad ,ipod ,Nokia,Blackberry,HTC etc .2,smart shape ... any extreme condition.4,Microcomputer power control indicator integrated5,use iphone original interface ,no additional wiring to charge the battery ,safe ...