[【2-IN-1 Bluetooth Transmitter & Receiver】The Bluetooth adapter could be switched between transmitter (TX) and receiver (RX) modes. In TX mode the Bluetooth audio transmitter plugs into a non-Bluetooth device such as TV/laptop by using 3.5MM AUX/RCA audio cable and transmits the audio to a Bluetooth headset or speaker. In RX mode plug into wired headphones/car radio speaker/wired stereo speakers to receive audio from smartphone via Bluetooth. 【Bluetooth 5.3 &Wider compatibility】The latest Bluetooth technology stronger connection stability wider signal range better compatibility and lower data latencyplaybackDrive free plug and playCompatible with USB flash drives or TF cards ofvarious brands plug and playStereo sound quality transmission without delay 【Longer DistanceStronger Connection】The adapter Built in signal gain amplifierno dead angle for room connectionThe 33 feet transmission sound quality has no delayand the signal is stable without jamming *Note: Operation range can be affected by Wi-Fi routers wireless TV adapters doors walls and also depends on the receiving devices. 【Dual Connection】Bluetooth transmitter receiver 2 Bluetooth headphones/speakers can be connected at the same time when transmitting and 2 mobile phones can beconnected when receiving this transmitter allows you to share your audio experience with a friend. After pair the 1st device (device “A”) press the pairing button twice and then pair the 2nd device (device “B”). Enjoy watching movies gaming or listening to music together without disturbing others. 【Trustworthy After-sales Service】Once purchased you are our valued customer. If you have any questions or need technical help please contact us through Amazon message or the contact information in the user manual]