... camping,business best choice SB-2116 New Portable Travel USB Charger for cell phone Working PrinciplesThis portable digital device mobile ... different connectors, such as: MP3 player, MP4 player, PMP, PSP, PDA etc. To charge this unit via computer USB port, solar energy or ... via different connectors, such as: FOMA phone, AU phone, MP3 player, MP4 player, PMP, PSP, GPS, digital camera etc.5. Super long ...