*mini amplifier speaker *for Mp3, mobile phone,notebook PC,PC, Mp4 *pop-up tumbler *charged by USB line Main Featuresmobile speaker for for Mp3, mobile phone,notebook PC,PC, Mp4, DVD, VCDTumbler design, never falling dow whatever where you put itWith design property right !Easy charging-can be automatically charged by USB line Configurations:Mini USB portOn/off power switchpower indicator ...