Features:Sport MP3 Music Player Headset Handsfree Headphones Wireless Wrap Around with TF Card slot + FM Radio Function100% Brand New.Weight : 41gCable length: 50cm(approx)A stylish， great-sounding headphoneWrap around wire free headphones designed to stay on your headBuilt-in TF card slot. (TF card NOT included) Just save your songs in your TF card and then get it played with this sport playeSupport MP3 music formatBuilt-in rechargeable li-on batteryAutomatic turn off while not under use for setting timeComfortable and secure for the most users: bicyclist， runners， joggers， walkersWith the FM Radio Function( Every time use of FM radio need to search )Packing details: 1x Headset sport MP3 Player1x Mini USB to USB cable