IR-2011D Description: IR Dual-Channel Wireless headphone IR-2010D Description: In-car IR Dual-Channel headphones YNC-4000W Description: Noise-cancelling wireless Headphone IR-2012D Description: In-car IR Dual-Channel headphones YNC-3000 Description: Noise-cancelling headphone YH-2400 Description: UHF stereo headphones VY-2400 Description: 2.4GHz wireless speakers T-40 Description: IR stereo transmitter-2 channels