... -Fi Digital Wireless Headphone 1,Plug-card style 2,Hi-Fi stereo music, 3.compatiable with MP3,WMA,WAV formats.... TF CARD MUSIC HEADPHONES WITH FM ... digital Hi-Fi stereo music headphone, compatible with MP3, WMA, WVA. It is available TF card, also used as mobile hard disk and card ... when turning on headphone with card. LED indication1.Charge indication:Red LED is on when charging and off when charging ...