Bluetooth Transmitter and Receiver, Disnix BTT009 Bluetooth Wireless Transmitter and Receiver 2 in 1 Adapter, with 3.5mm Audio Jack For TV, Desktop, Laptop, Tablet, MP3 / MP4 Player, CD and DVD Players, Portable Speakers, Headphones, Home stereo, Car Music Sound Systems and more other 3.5mm Audio Devices-Black Works as a universally compatible 2-in-1 Bluetooth Music Receiver and Transmitter for Apple , Samsung , HTC , LG , Sony , Microsoft and more phones , computers , mp3 players , tablets , etc. Includes a 3.5mm audio cable , 3.5mm extension cable , RCA adapter and Micro USB charging cable Simply slide the button on the side of the device to switch between transmitting and receiving modes. Turn on by holding down the power button for 5 seconds and the LED indicator will flash when it has entered pairing mode. Receiver function allows you to plug into non-Bluetooth devices such as your car, headphones, and speaker system for wireless audio streaming with your Bluetooth-enabled smart phone, tablet, MP3 player & more. Transmitter function allows you to plug into TVs, MP3 players, radios & computers to pair and sync with your Bluetooth-enabled headphones, speaker system, or smart phone. Battery life for TX mode: about 11 hours; battery life for RX mode: about 6 hours