... Iphone 3GS, Iphone 4, Ipad, Ipod, PDA and other device)- Specification: Input: DC 12V-24V; Output: DC 5V+/-0 ... sizes, single or double USB port and easy to carry. Function:Over-current over-voltage, over-load and over-temperature protectionThe intelligent control will ... with the safe certification standard.high working efficiency: over 85%, good charging performance.rapid charging your phone safely ...