Bluetooth 5.3- Farther and Faster: This wireless 5.3 USB Bluetooth adapter provides a stable connection of 10 meters , providing clear, practical, and enjoyable sound (Note: Phone calls are only supported in RX mode, not in TX mode).Ultra Compact & PortableWith ultra-compact and small lightweight design, put it in your pocket or bag can easily carry this bluetooth audio adapter .Plug and play: A 2-in-1 Bluetooth USB adapter suitable for cars does not require the installation of drivers for any compatible devices.Wide compatibility: This 3.5mm car Bluetooth USB adapter 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 systems, amplifiers, speakers, and headphones, while the TX mode can be used for PCs, desktops, MP3, MP4, switches, and more. provides one year of warranty to make you feel at ease. Please contact our customer service team at any time to easily eliminate and replace failure, or understand any issues about purchasing.