... TV,computer,VCD, DVD,etc-player HI-FI Speaker mp3 mp4 dvd TV PC CD Wireless HeadphoneModel ... the sound wirelessly from any electrical device with audio output such us TV,PC,DVD,VCD,MP3/ ... automatically3.Wired Headphone: Used by audio cable4.Wired net chat:there will be audio cable with mic, insert ... -Noise Radio>50db 6.Distortion<2%THD 7.Speaker:40mm mylar 8.Frequency Response:20-20000Hz9.Transmission ...