Walmart offers the Bravo View Single Source Automotive IR Wireless Headphones, model no. IH-05A, for $20. Choose in-store pickup to dodge the $4.97 shipping fee. That's the lowest price we could find by $4. These headphones are for use in motor vehicles only, requiring a mobile video system that has a built-in infrared transmitter. They feature a frequency response of 20Hz to 20kHz, a mini-jack audio input, wireless range of up to 8 meters, and a foldable design. They require two AAA batteries (not included).