Applicable for TV set, computer, DVD/VCD player, MP3, walkman and other electronic products with audio output. Product parameter: 1.Emission frequency: 2.3MHz and 2.8MHz 2.Receive frequency: 2.3MHz and 2.8MHz 3.Frequency response: 20Hz-15KHz 4.Effective range: 6-10 meters 5.sparation: >or=30dB 6.distoration: