... mp3 player,FM radio,Wireless Headphone, Earphone Product Introduction Thanks to buy and use our company's Card-Inserted Digital Wireless Headset. This headset ... as various audio formats such as MP3 and WMA; FM radio is available; with built-in microphone; this headset has two ... headset mp3,Card-Inserted headset mp3,sports mp3 player,FM radio,Wireless Headphone, Earphone