Solution:ROCKCHIP2601stainlesssteelcrustAudioMP1/MP2/MP3/WMA/W***USB2.0highspeedFM,h***eautoandmanualpresetsystem,itcanstoreupto40channelsBuilt-inrechargable280MAHLithiumbattery,playsupto8hoursFirmwareupgradableDimension58x33x23Weight:23g)