... MP3, MP4 Solar charger,solar energy charger for mobile phone, digital camera, PDA, PSP, GPS, DV, MP3, MP4 Product parameters ... batteries);4. Output voltage: 4.5V 5.5V.6.5V 9V typically 5.5V, the output port ... indicator shows red for the green, about 5-6 or so can be full of small, light ... with a charging cell phone or digital camera with MP3, MP4 and other digital products can charge a good connection ...