2.4GHz broadcasting You can use as many headphones as you want with 1 transmitter

Digital volume control on headphone You set your own volume

Input from RCA audio, 3.5mm, or USB DVD/CD player, TV, PC, iPod, MP3 player

* 2.4GHz Digital Wireless Supperve Sound Quality
* Wireless Range> 30m (50m Line of sight)
* Broadcasting Mode, one Transmitter Support Multiple Receivers
* Audio format 16bit , 48KHz sampling rate
* Win XP/Vista/7, Mac OS-X

Transmitter
* RF Frequency Hopping in 34 Channels Auto Searching for the Best Performance
(Up to 34 transmitters can be used in one place without interfering each other)
* USB and Analog (3.5mm port) Dual Audio Inputs
* No Driver, Plug N Play
* Power Supply: DC5V (included)
* Built-in charger for 1.2V AAA Ni-MH Battery

Headphone
* Auto Wireless Connection after Powered on
* Superior Audio Performance
* Electronic Volume Control
* Lower Power Indicator Alert
* Auto Powered off after 10 minutes if no music source
* Weight: 200g (7.06 ounce) including battries
* Battery life: Approx. 20hours

Speaker
* Driver Unit: O40mm
* Impedancee: 32 OHM
* Sensitivity: 111+3dB, at 1KHz, 1.0mW
* Max Input Power: 15mW
* Freqency Response: 20Hz-2,000Hz

Package contents:
* 2.4GHz Wireless headphone
* 2.4GHz Wireless transmitter
* DC5V USB power supply
* 16" 3.5mm plug stereo cable
* 4Ft USB A to Mini plug cable
* 6Ft 3.5mm stereo plug to 2xRCA cable
** Battery is NOT included **

** 30day money back gurantee **
* Warranty: 1 year