"http://www.amazon.com/gp/product/B0036Z82PQ?tag=httpadvance00-20
Neodymium magnets Duofol diaphragms for audiophile-grade sound reproduction
Integrated volume control for enhanced usability convenience
Collapsible design with metal-reinforced headband ensures portability durability
Operates for about 50 hours with BA-300 rechargeable battery
Sennheiser SET840 -TV RF Stereo TV Assistive Listening Headphones System"