wireless Headphone 1.Latest wireless headsets,innovative wearing style. 2.You can access TV,computer,VCD, DVD,etc-player HI-FI Speaker mp3 mp4 dvd ... The headset can be used as FM radio separately, search and lock channels automatically3.Wired Headphone: Used by audio cable4.Wired ... chat.(Optional) Specification: 1.System:VHF/RF 2.Modulation:FM 3.Mode:Mono 4.Operation distance:> 30meters(360 degree) ...