Features Easy to upgrade your old style speaker amplifier TV or car stereo system to bluetooth hands free wireless audio bluetooth 5 0 version with HG external singal antenna provides stronger and stable signal transmission up to 40 meters 130 feet without any disconnection Low Latency HD HiFi subwoofer effects lossless sound quality make it ideal for watching TV movies Support connecting with two bluetooth headphones at the same time you can share the fun with your family or friends without disturbing any others Equipped with power off memory chip which supports automatic pairing to the existing devices with the previous mode song frequency etc bluetooth Transmitter mode wirelessly streams audio from your non Bluetooth TV home stereo system or CD player to your bluetooth enabled headphones or speakers bluetooth Receiver mode wirelessly streams audio from your Bluetooth enabled phone tablet or computer to your wired stereo speakers headphones car stereo by the 3 5mm RCA audio cable U disk music play mode directly plug the U disk into this device streams audio to your wired stereo speakers headphones car stereo by the 3 5mm RCA audio cable Wide Compatibility With the included 3 5mm RCA cable this 3in1 Receiver Transmitter adapter can widely be used on your computer laptop home stereo system headphones smartphones Mp3 players CD players car stereo etc Specifications bluetooth Version bluetooth 5 0 EDRbluetooth Protocol A2DP AV