Sony 150 feet Expanded Long Range RF Wireless Noise Reducing Dynamic Stereo Headphones with Volume Control, Mute Switch & Adjustable Comfortable Wide Headband for all VIZO E420I-A1, E420VSE, E422AR, E472VLE, E552VLE, E601-A3, E601I-A3 & E701I-A3 LED LCD HDTV Flat Screen Television - Radio Frequency Transmission Works Even Through Walls Wireless FM headphones for cord-free listening 40mm driver units for expressive sound Easy-adjust headband for long term comfort Noise reduction system for minimal transmission noise Analog Phono Input (left/right), Analog Stereo Input mini jack (x1)