1. 2-in-1 Bluetooth Transmitter and Receiver: In transmitter mode, turn any non-Bluetooth 3.5mm audio output devices like TVs, PCs, CD/DVD players, MP3/MP4 into Bluetooth transmitters that can stream Bluetooth audio, allowing you to wirelessly stream your favorite movies, music, games. 2. Pair with 2 Devices Simultaneously: Share the fun with your spouse by transmitting audio to two Bluetooth headphones or speakers at the same time. 3. Perfect Control Design: Designed with independent volume +/- buttons for perfect control over voice up/down and next/previous song, and a multi-function button to control music play/pause, answer/hang up/reject calls, redial last number. 4. Cordless Roaming: Keep your old stereo or wired speakers alive with new wireless Bluetooth connectivity, pair with your smartphone or tablet from up to 30 feet away and enjoy amazing music without the wires. 5. Universal Bluetooth Compatibility: It pairs in seconds with any Bluetooth-enabled devices, such as iPhone, iPad, Android smartphones/tablets, Bluetooth headphones, Bluetooth speakers.