2 in 1 Bluetooth adapter: the Bluetooth audio adapter integrates two functions: Bluetooth transmission and Bluetooth reception, which can transform your old car radios and desktop computers into Bluetooth-enabled devices and wired speakers or headphones at home into wireless devices. The reception mode and transmission mode can be switched as desired and are suitable for a variety of devices such as smartphones and tablets. Double connection: the wireless Bluetooth audio adapter can be connected to two devices (mobile phone/tablet/Bluetooth headset) at the same time. With RX mode, you can connect two mobile phones at the same time and with TX mode you can connect two Bluetooth devices at the same time. RX and TX mode can be switched with one click. Dual mode design allows you to enjoy wireless freedom easily. Latest Bluetooth V5.3: This 2-in-1 Bluetooth adapter is equipped with the latest Bluetooth V5.3 chipset, which provides a stable connection of 10 metres (no obstacles). Thanks to the faster and more stable transmission, you can enjoy a lag-free and smooth music experience at any time. Once the Bluetooth connection is paired and used again, the connection is automatically established without the need for repairing. Lossless sound quality: the Bluetooth 5.3 AUX adapter uses CVC noise reduction technology to effectively reduce noise and make the sound quality clearer. The Bluetooth receiver for car supports audio analysis of MP3, WAV, WMA, FLAC, APE and other specifications, so you can achieve really low latency when listening to music. Easy to use: after turning on the device, you only need to connect it to the device via an AUX cable or RCA cable, then you can use it after successful connection. Pair this Bluetooth stereo adapter with your smartphone, tablet, laptop or Bluetooth speakers and Bluetooth headphones, then you can enjoy your favourite streaming music.