... MMC / SD card, MP3/WMA files stored bluetooth headsetConnected to the computer, read and write files to the MMC / SD card, ... readerFM radio ,covering,cumpus radio band,Suitable for general radio and campus radio listening3.5mm audio output universal ports, MP3 music ... CelsiusOperating humidity15-85 RHNet weight190gDimensions20*15*90mm Low price Potable wireless bluetooth headset 5hours operation