Sony MDR-RF811RK

Rechargeable wireless headphones with 100m listening range<br/><br><br/>40mm driver: Hi-Fi quality digital sound for home, with powerful 40mm Neodymium driver unit and long stroke diaphragm for deep clear bass.<br/><br>RF wireless: Radio Frequency transmission technology offering a huge 100m listening range.<br/><br>Cordless style: Closed type headphones with wireless connectivity and built-in volume control for the ultimate freedom to listen around the house.<br/><br>Easy set up: Tune and go: Automatic tuning and on/off switch, plus comes with all the cables you need to plug into your TV.<br/><br>Simple connectivity: Stereo mini plug easily connects your headphones to TV and audio devices around the home.<br/><br>Lightweight and long-lasting comfort: Weighing just 270g and designed for long-lasting wearing comfort with parallel-link self-adjusting headband plus padded circum-aural ear cushions.<br/><br>Sony MDR-RF811RK. Product type: Headphones. Connectivity technology: Wireless. Recommended usage: Music. Headphone frequency: 20 — 20000 Hz. Wireless range: 100 m. Weight: 270 g. Product colour: Black