Product Description Specifications: Receiver: Frequency Range: 84 108Mhz Reception Mode: Fm Distortion: ≤2 Power Supply: 2 Aaa Batteries Not Included Color: Black Net Weight: 190G 6.7Oz Emitter: Emission Frequency: 86±0.5Mhz Modulation Mode: Fm Emission Distance: 30M With No Inference Speaker: 40Mm Mylar Reception From Any Audio And Visual Equipment With Audio Out Socket, Such As Tv Set, Audio Device,Dvd Vcd Player, Multimedia Pc, Etc. Power Supply: 2 Aaa Batteries Not Included Batteries Color: Black Product Size: 19.3 8Cm 7.6 3.15In H D Net Weight: 140G 4.94Oz Package Size: 22 20 8.5Cm 8.66 7.87 3.35In Package Weight: 456G 16.1Oz Package Including: 1 Wireless Headphone 1 Fm Transmitter Stand 1 Audio Cable 1 User Manual