The Sennheiser RS 180 Headband Wireless Headphones in titanium look sleek and offer manual level control for superior sound performance. Engineered on proprietary Kleer wireless technology, this pair of Sennheiser headphones creates stereo quality sound with a frequency response of 18 Hz. Its wireless coverage of 2.4 GHz to 2.8 GHz offers a transmission range of almost 320 feet. These full-sized headphones with ear cushions are comfortable yet light.