Dual function Bluetooth Transmitter and Receiver、 2-in-1 adapter let you choose freely between the transmitter mode and receiver mode with a simple switch、 allowing you to maximize the use of a single device with a wide range of existing devices and appliancesBluetooth Transmitter(TX)、 with such transmitter、 you can watch late night shows/movies with a wireless headphone、 streaming Bluetooth music from DVD iPod HDTV MP3 player、 and even connect your computer to a Bluetooth speakerBluetooth Receiver(RX)、 make the most use out of your existing stereo speakers、 bring your old headset and speakers into BT age、 connect them with the Dongle and instantly streaming wireless music from your latest smartphones and tablets. No more tangled wires、 only superior soundsWith High Quality Metal 3.5mm AUX Male to Male EDR 、 Plug and Play System、 NO Software Needed、 Pairs to Your Bluetooth Device Simply and SwiftlyMini and Comfortable、 power by any active USB port and never have to worry about charging again、 support for iPhone iPad iPod Samsung Galaxy HTC Headphone HiFi Tablet PC HDTV MP3/MP4 DVD Media Player