NDNCZDHC 2 Channel Cordless Infrared - Wireless Headphone

Specification: Condition: 100% Brand New Two Channel: Channel A: 2.8 MHz for the right channel; 2.3 MHz for the left channel Channel B:3.8 MHz for the right channel; 3.2 MHz for the left channel Speaker: 30mm for Mylar Cone Impedance: 32Ω ± 15% Effective Range (maximum): About 10 Meters Power Source: 1 X AAA Battery (not Included) Signal Noise Ratio: ≥70dB Channel Separation: ≥40dB Frequency Response: 20-20,000Hz Audio Model: Stereo Automatically turn on when the wear and shut down when take it out of function Package List: 1 Pair of Infrared Earphone Note: 1.Audio cable and batteries is not included. 2. The infrared headphones is mainly used for the car DVD, if you need it for the TV, please buy transmitter to pair with the headset, otherwise the headphones will not work at all.