With its 100m wireless range, the Sony MDR-RF811RK Wireless Headphones - Black gives you freedom to roam while listening to your favourite music. These headphones also have up to 13 hours of battery life, together with a headband that is self-adjusting for your listening comfort.
Up to gives you freedom to roam
Up to 13 hours of battery life
Self-adjusting headband for listening comfort
40mm neodymium drivers for powerful, balanced sound
20-20,000Hz frequency range
Driver Unit: 40 mm dynamic - Dome type
Frequency Response (Hz): 20-20,000Hz