... of multi-function card headset.headset sports wireless mp3 player,building 15 engineers R&D team including software ... customers.Production muli-function card headset mp3 playermain features1.Play MMC / SD card, MP3/WMA files stored2.FM radio , ... time Technical specificationsItemSpecificationSupport Memory Card MMC card,SD card,TFcard(SD card adapter required),minMusic formatMP3,WMASupport the ...