Sony MDR-RF811RK Wireless RF Headphones. The Sony RF811 Wireless Headphones allow you to listen to music or programmes free from the restriction of a cord. With an easy connection to TV or Hi-Fi, you can enjoy high fidelity sound from up to 100m range away. With a rechargable battery included, enjoy long-lasting use with the Sony Wireless Headphones. So buy this Sony MDR-RF811RK Wireless RF Headphones Was £49.00 Now £45.00