* Connect the transmitter to USB port of the computer. The indicator lights around will be lighted, the computer will identify USB audio mode and change it to sound source output mode. It's no need to install any drives. Let the computer play music or chat on line wirelessly, you will enjoy the sound from the USB Infrared Computer Headphone.
* The sound source output jack of the transmitter can be connected to wire-speaker(with purifier) or wire-headphone. The headphone can be used wire or wireless.
* The head of the transmitter should face to the receiver, the short distance will be better.
* Also you can connect to the USB power supply jack by using extension USB line,press power on/off button on the transmitter. The indicator lights around will be lighted. Insert the 3.5mm stereo sound supply extension line to the sound input jack on the transmitter. The other head of the 3.5mm stereo sound supply extended line can be connected directly to the sound output source(for example MP3/MP4/CD/....), or connected VCD/DVD/TV/audio.....). Transmitter can be adjust automatically according to the sound input volume.
* The headphone can be charged power by connecting the headphone power charge extension line to the headphone power charge jack.
Infrared receiving headphone:
* The Wireless MP3 MP4 Headphone shoud use 2 AAA batteries(not included)
* With adjustable volume wheel
* Comes with a USB charger cable that can charge for the rechargeable AAA battery
* There is a sound source input and output jack existed under the switch button of the headphone. it can be used to input or output sound source. When the heaphone power is finished, you can put one 3.5mm stereo sound line between the headphone and the sound source output jack. PC Wireless Headphone will work as a wire-headphone(at this moment, the headphone should be switched off). Or switch on the headphone and insert other wire-headphone. Two people can hear the voice at the same time.
* Transmitting medium: infrared(850nm)
* Signal to noise: above 60db
* Transmitting mode: stereo
* Transmitter power: USB 5V
* Transmitter power consumption: 100mA
* Microphone Effective transmitting semi-diameter: 2.5 meters
* Effective transmitting distance: 5 meters
* Sound source output peak value: about 1.5Vp-p
* Sound source input peak value: less than 2Vp-p
* Headphone power: 2AAA battery
* Frequency response: 30Hz to 20KHz
* Power for charging: 55-65mA
* Total weight: 492.9g
* 1 x IR Stereo Wireless Headphone
* 1 x USB cable
* 1 x Infrared Transmitter
* 1 x 3.5mm audio cable
* 1 x Electronics sound supply transfer line
* 1 x AC adapter(100-250V)
* 1 x Headphone power charge extension line
* 1 x Manual