... music enjoyment. 1.Reader function: plug in TF card, con- nect to computer by USB 2.0 cable, then download ... type: MP3,WMA,WVA format, maximum capacity 32GB TF card.4.Sound design: Use best horn, ensure HI-FI ... light flash, it works normal. Red light flash, needs to recharge, after flash 1 min,headset shut off auto. ... auto after 30s8.OEM are welcome. Wireless headset with TF card for PC and mobile