Sennheiser RS120 On-Ear Wireless RF Headphones System with Charging Dock ———— The RS 120 RF (Radio Frequency) Wireless Headphone lets you enjoy sound without the cumbersome cables associated with traditional headphones. This system features a lightweight on-ear headphone that receives sound from a transmitter base when connected to an analog output of any audio source (like a TV, sound system or computer). The sound quality is classic Sennheiser; detailed and balanced with good clarity and bass response. These lightweight headphones, featurin