Bluetooth Aux Adapter:Bluetooth transmitter supports both transmitting and receiving audio, allowing you to use it as a Bluetooth transmitter 3.5mm to convert non-Bluetooth devices into wireless-enabled ones, as well as a Bluetooth receiver to stream audio from your smartphone or other Bluetooth sources to your existing audio equipment.can easily transmit audio from TV, airplane, computers and other devices to headphones or speakers wirelessly, completely saying goodbye to the constraints of audio cablesBluetooth Transmitter 3.5mm:This Bluetooth receiver 3.5mm jack supports connecting two wireless headphones simultaneously, enabling you and your friends or family to enjoy movies and music together. Perfect for traveling with a companion or enjoying synchronized sound at home. with automatic connection memory function, after successfully connecting once, the airplane Bluetooth adapter will automatically connect to your phone when you turn on Bluetooth again.Bluetooth Transmitter Receiver:Supports Transmit (TX) and Receive (RX) modes: the Bluetooth transmitter connects non-Bluetooth audio sources to Bluetooth-enabled speakers and headphones via a 3.5mm cable, RX mode: the Bluetooth receiver receives audio from a smartphone or other Bluetooth-enabled audio source device and transmits the audio to your car or home stereo stereo, headphones via a 3.5 mm AUX cable.Ideal for watching movies, workouts and road trips.Airplane Bluetooth Adapter: Experience flawless audio transmission with Bluetooth 5.3, our Bluetooth airplane adapter ensures a stable and rapid connection with a coverage range of up to 33 feet. Say goodbye to signal lag and hello to uninterrupted, high-quality audio streaming.Aux Bluetooth Adapter: The Bluetooth Transmitter can be fully charged in just 90 minutes and the built-in long-lasting battery lasts up to 19 hours in TX mode and up to 14 hours in RX mode,Built in 280mah rechargeable lithiumbattery, supporting charging and usingat the same time, increasingpracticability and is quick-charging with the included Type-C,allowing you to enjoy continuous streaming without worrying about battery life.