2 in 1 Bluetooth Transmitter and Receiver: UGREEN 3.5mm Bluetooth Transmitter for TV supports both Bluetooth transmitting and receiving, namely TX and RX Mode. RX mode supports two devices to use simultaneously like car stereo, and home stereo, while TX mode supports one device to use simultaneously like TV, PC. | Bluetooth 5.1 - Farther & Faster: This Wireless 5.1 USB Bluetooth Adapter offers a 10m stable connection and supports SBC codec, delivering clear, functional, and enjoyable sound-both for listening and for speaking. (Note: Phone calls only be supported in RX mode, not in TX mode). Get a faster transfer for quick connectivity anytime! | Plug & Play: The 2 in 1 Bluetooth USB Adapter for Car doesn't need to install a driver for any compatible device. Both the 3.5mm and USB-A ports need to be connected, then you can directly connect it with your Bluetooth devices, very easy and convenient. | Wide Compatibility: This 3.5mm Bluetooth USB Adapter for Car is compatible with devices with 3.5mm and USB A interfaces. The RX mode can be used for car stereo, home stereo, audio music streaming sound system, amplifier, speaker, headphones, and the TX mode can be used for TV, PC, desktop, MP3, MP4, switch, etc. | Compact & Portable: Ultra-compact small USB Bluetooth Adapter would save your space. You can easily carry this Wireless Bluetooth adapter around and everywhere easily without any hassle of its portable size and lightweight design.