Sennheiser RS160 Wireless Audio Headphones + Compact Portable Transmitter - East Sennheiser RS160 Wireless Audio Headphones + Compact Portable Transmitter - East Version Closed, around-the-ear digital wireless headphones KLEER lossless audio transmission for interference-free reception KLEER technology will not interfere with wireless networks or other 2.4 gHz devices Audiophile-level transducer systems with neodymium magnets for bass-driven audio reproduction