Bluetooth Receiver/Transmitter, Aux To Bluetooth 5.3 Adapter, Tv/Plane/Headphone 2 IN1 BLUETOOTH AUX ADAPTER: Receiving and Transmitting functions for all your Bluetooth needs. (TX)In bluetooth transmitter mode: Bluetooth transmitter transfers TV audio to Bluetooth headphones. (RX)In bluetooth receiver mode: Bluetooth audio receiver streams music from Bluetooth devices to your home stereo/car stereo system. HIGH-FIDELITY STEREO: Comes with the latest wireless SBC codecs for HIFI high-definition sound performance, and provides wireless audio streaming that is consistently clear with virtually no lag or degradation in sound quality. BLUETOOTH AUX ADAPTER FOR CAR: Plug the Bluetooth aux adapter into the car aux port and connect to it wirelessly to allow your phone to play music through your car speakers. This Bluetooth adapter has a built-in microphone intelligent noise reduction and digital signal processing, one click to answer or hang up calls. BEST TRAVEL COMPANION: The lightweight and compact design of the airplane Bluetooth adapter allows you to carry it without adding any burden. Built-in battery for up to 15 hours of use, enjoy your favorite wireless content all the time with this bluetooth adapter. Bluetooth 5.3 STABLE CONNECTION: The Bluetooth adapter harnesses the power of Bluetooth 5.3 technology to ensure a more stable and faster connection. Move freely within a range of 33 feet, even with your phone at a distance, and revel in stable and uninterrupted music. WIDE COMPATIBILITY: KAIY Bluetooth transmitter receiver is compatible with 3.5mm interface devices, such as airplanes, televisions, car stereos, home stereos, headphones, audio music streaming systems sound systems, speakers, gym equipment, PCs, MP3, and other devices.