System infrared light: 850nm
<br />Carrier frequency:
<br />A channel: left channel: 2.3Mhz Right channel: 2.8Mhz
<br />B channel: left channel: 3.2Mhz Right channel: 3.8Mhz
<br />Signal to Noise: Greater than 60db
<br />Channel Separation: Greater than 45db
<br />Distortion: Less than 1%
<br />Frequency Response: 30-20000Hz
<br />Power Supply: 2 x AAA Batteries (Not Included)
<br />Colour: Black
<br />Package: 4 x Car Wireless Headphones