Easy operation just connect it to the player and then they will connect automatically and require no setting up; - Compact size convenient to carry; - Ultra long transmission distance the effective distance is: >= 10 meters; - Built-in lithium battery can non-stop work for more than 24 hours. Usage: - Connect the transmitter to TV DVD MP3 or other player device with 3.5mm audio cable and then turn it on; - Turn on all the bluetooth receiving equipment (such as bluetooth audio receiver bluetooth speakers bluetooth headphones etc) so that the transmitter can find them and then they will match and connect automatically; - When they are all connected you can start to enjoy wonderful wireless music.