... ,Telecommunications and phones,Car importers,Oil companies. 2011 Multifunctional Digital Mini SpeakerDescription - Robot MP3 Player Speaker Unit Size: L105 x ... slot Power supplied: Built-in Rechargeable Lithium battery (charged by USB cable)Sensor touch to control volume Up/Down, Play/Stop, Next ... time: 3-4 hoursAudio Input: Dia.3.5mm audio jack cable, to connect your MP3,MP4,CD, DVD, iPod, iPhone, ...