LATEST BLUETOOTH 5.4 ADAPTER: The upgraded Bluetooth 5.4 aux Bluetooth adapter offers longer battery life, up to 33 feet of range, and stronger connections. With the latest wireless SBC codecs for HIFI high-definition sound performance, provides wireless audio streaming that is consistently clear with virtually no lag or degradation in sound quality.2 IN 1 BLUETOOTH TRANSMITTER AND RECEIVER: 2 in 1 functions for all your Bluetooth needs. (TX)In Bluetooth transmitter mode: Bluetooth transmitter transfers Airplane/TV/PC audio to Bluetooth headphones. (RX)In Bluetooth receiver mode: Bluetooth audio receiver streams music from Bluetooth devices to your home stereo/car stereo system.AIRPLANE TRAVEL ESSENTIALS: 3.5 mm aux airplane Bluetooth adapter easily connects Bluetooth headphones to in-flight systems, has a built-in battery for up to 14 hours of use, enjoy your favorite wireless content all the time, and the lightweight and compact design of the airplane adapter allows you to carry it without adding any burden.BLUETOOTH CAR ADAPTER: This car Bluetooth adapter has a built-in microphone that picks up sound, intelligent noise reduction, and digital signal processing, one click to answer or hang up calls. Just plug the car Bluetooth adapter into the car aux port, and the phone Bluetooth connects to the car Bluetooth adapter, allowing your phone to play music through your car speakers.UPGRADE DISPLAY: The upgraded aux to Bluetooth adapter screen can display the TX or RX mode, the volume, and the remaining battery. Bluetooth transmitter is also equipped with a Type C charging cable and can be fully charged in just 2 hours.EASY TO USE: The airplane headphone adapter is simple and easy to set up. Just plug, pair, and play. Connects in seconds. No App or wireless router is required.