Product Name: RF Wireless Stereo Headphone with MicrophoneModel Number: TEN-1085Place of Origin: ChinaSpecifications: 1) Transmitter shoot frequency: 84.5MHz 2) Headphone frequency range: 82 - 106MHz 3) Receiving direction: omni direction.(several receivers can share one transmitter) 4) With FM radio (88 - 108MHz) 5) With seven LED lights 6) With super bass function 7) Operation range: 10m (inside), 30m (outside) 8) For: PC, TV, VCD/DVD, MP3 and online chatting 9) Power: 4 x AAA size batteries (not included) 10) Accessories: 1pc audio line, 1pc wired microphone with 3.5mm jack