Listen to your favourite tracks without restriction by investing in the Sony MDRRF810RK Wireless Headphones! Mighty music power With their huge 100 meter range & built-in volume control, the Sony MDRRF810RK give you the freedom to roam around the house & listen to whatever you want without disturbing those around you. & with a powerful 40mm Neodymium driver & long stroke diaphragm, you can be assured of clear Hi-Fi professional quality sound & a deep clear bass. The comfortable & adjustable MDRRF810RK are designed for continuous wear & feature both automatic tuning & an on/off switch allowing you full control of your music. These headphones also feature incredible battery playback of up to 28 hours, so you can theres no stopping you when listening to your favourite tunes. Take your listening to the next level with the Sony MDRRF810RK Wireless Headphones.