1,Battery +protection case 2 in 1 combo features ,perfect solution for iphone signal problems. 2,Elegant design and use friend Product Specifications for VB-P30001. Cell type:Li-Polymer2. Capacity:3000mAh3. Input:5V/1A4. Output:5V/1A,5V/2.1A6. Charging time:4.5-5.5hr 1,Compatible with Iphone, ipad ,ipod ,Nokia,Blackberry,HTC etc .2,smart shape design ,no need to remove the cover then you can ...