RCA CWHP205 Wireless Stereo Headphones and 2.4GHz Transmitter Up to 150ft of crystal-clear reception, high-performance audio from anywhere in your home Comfortable design for hours of entertainment Extensive battery life for up to 6 Hours Frequency Response  20 Hz  20 kHz Compatible with your television, stereo receiver, shelf stereo system, PC, MP3 player and other devices