Phefop 64i1x2pk9h Wireless Headphone

Specification: Condition: Two Channels: Channel A: 2.8MHz for Right Channel; 2.3MHz for Left Channel Channel B: 3.8 MHz for Right Channel; 3.2MHz for Left Channel Speaker: 30mm for Mylar Cone Impedance: 32Ω±15% Effective Range(): About 10 Meters Power: 1 X AAA Battery(Not Included) to Noise Ratio: ≥70dB Channel Separation: ≥40dB Frequency Response: 20-20,000Hz Audio Model: Stereo Automatically turn on when worn out and shut down when not working Package List: 1 Pair of Infrared Earphones Note: 1. Audio cable and batteries are not included. 2. The infrared headphones are mainly used for car DVD. If your TV requires it, please purchase a transmitter to pair with your headset, otherwise the headphones will not work at all.