Features:
 Wireless TV connection, the effective distance is 20 meters to 30 meters.
Wire connect 3.5MM audio interfaces devices such as CD, TV, computers, mobile phones etc. 
Built-in FM radio headphones, listening to the radio anytime, anywhere.
NdFeB pronunciation unit and high-quality gold-plated pin headphone components, pristine sound quality.
  
Specifications:
 style: Wrieless, 3.5mm
Speaker Dimension: Φ40mm
Impedance: 32Ω ± 15%
Frequency Response: 10Hz-20KHz
Sensitivity: 92 ± 3dB at 1KHz
 
Wrieless Headphone
Voltage: 2.0 ~ 3.0V, 2 * AAA
Electric current: 40mA
Wireless Headphone Receiving Frequency: 109Mhz / 110Mhz
Radio frequency: 87.5 ~ 108.0MHZ
Receiving frequency response: 20 ~ 20KHz
S / N rate:> 60dB
 
Transmitters
Voltage: 2.0 ~ 3.0VDC, 2 * AAA
Electric current: 40mA
Transmitting Frequency: 109Mhz / 110Mhz
Work distance in vast place: 20M ~ 30M