864MHz wireless stereo headphone for car use with two color optional

Single-channel IR Headphone in Ultra Lightweight Design for Car Audio source

In-car Infrared Wireless Headphones in Foldable Design, with Dual Channels

VHF/RF Wireless Headphone with Automatic Mute Function

In-Car IR Wireless Stereo Headphone with Built-in 40mm Mylar Speakers (Dual-channel)

In-Car IR Wireless Stereo Headphone with Built-in 40mm Mylar Speakers