2-in-1 Bluetooth Transmitter & Receiver: In transmitter mode(TX), the Bluetooth transmitter plugs into a non-Bluetooth device, such as a TV/in-flight entertainment via the 3.5mm jack and transmits audio to Bluetooth headphones; In receiver mode(RX), the Bluetooth receiver receives audio from phones/tablets and play music on a wired speaker/car stereo. | Pairs 2 Devices & Easy to Use: In TX mode, the Bluetooth TV Adapter supports pairing 2 Bluetooth headphones and sharing music simultaneously. It can also pair 2 smartphones in RX mode. Just press the power button 2 times to pair with the second Bluetooth device. Plug, pair, and play, easier to use. | Flexibility 3.5mm AUX cable: Unlike other products that have fixed-prong or foldable prongs, our long bendable cable won't fall out if bumped. Made of high rebound rubber material, designed for narrow environments such as wall-mounted TVs and wall-mounted audio systems. it is soft, resistant to bending, and can last longer. | Support Hands-free Calling: Built-in microphone, this Bluetooth AUX adapter allows you to make hands-free calls while driving, Bluetooth 5.3 tech reduces the voice delay and background noise. Just press the power button to answer/hang up calls, and a long press to reject the call. | 12+ Hours Battery Life & Play While Charing: The Bluetooth audio adapter has a battery life of 12+ hours, in case you forget to charge it before using it, the Bluetooth adapter can be used while charging with the included charging cable. | Portable Bluetooth Audio Adapter: The Bluetooth transmitter receiver is designed with a keychain attachment, so you can easily hang it in your backpack or any place. Super mini size, lightweight design, the Bluetooth audio adapter will not take up extra space and is easy to carry around.