Hauppauge XFones

2.4GHz Wireless Headphones for PCs and Macs -Wireless audio transmission via a USB 2.0 port.
-2.4GHz RF transmission, with data rates up to 6Mbit/sec.
-Virtual Surround Sound through Dolby Headphone.
-USB Plug and Play. No software required.
-40mm Mylar cone with Neodymium magnet for wider frequency response.
-Widest dynamic spectrum maximizes audio enjoyment.
-9 hours battery life.
-Support multiple headphones (broadcast mode).
-Works with Microsoft XP, Vista and Mac operating system.
-Transmission distance: 10 meters
-Weight: 260gm (without battery)