... ,various color, comfortable wearing, good plastic material, HIFI music player gives you stereo music enjoyment. 1.Reader function: plug in TF card, con ... - nect to computer by USB 2.0 cable, then download music and studying material2.Power supply: inlay rechargeable Li battery, use ... headset and PC mic port, you can talk by internet6.LED indicator: Green light flash, it works normal. Red light flash ...