Colours or Sizes (cm) available:120*100*45mm, in silver,red,blue and other colors as per your requirement List Of Components:Emitter,receiver,audio cable Unique Features:Neck-hang wireless headphone Product Spec & How To Be Used: 1. HI-FI super bass 2. wireless headphone with outside antenna 3. FM RADIO,TV,PC,DVD/VCD,MP3/4 no MIC