... .5V * Charging Time: about 3 hours * FM Transmitter to all 2.5mm and 3.5mm digital player* ... iPod, all kinds of cellphone, PDA, Digital Camera, MP3 & MP4 Player.* It has two ports: iPhone Port ... up phone like this when driving. ---Just use Audio cable, connect it to your mobile and adjust ... charge iPhone,(3GS,4G),iPod, any mobile phone, mp3 anytime anywhere. recharged by sunlight or electricity. Easy ...