2 Packs Xtremevision XV-686WHD Wireless Dual Channel IR Infrared Folding Entertainment HeadPhones for in Car TV Video Audio Listening Good For TOYOTA Models Good for all TOYOTA Car Models. Pack of Two. System Infared Light: 850nm Carrier Frequency: Channel A 2.3mhz (L) 2.8mhz (R) - Channel B 3.2mhz (L) 3.8mhz (R) Mode: Stereo. Signal to Noise: &gt;60dB. Channel Separation: &gt;40dB. Distortion: &gt;1% Frequency Response: 30-20.000Hz. Power supply: 2x AAA Battery (Not Included)