Small and Portable This USB Bluetooth adapter is small and lightweight, and can be easily put into your car, bag or pocket. Upgrade your speakers, stereos or other devices compatible with 3.5mm AUX interface anytime, anywhere, and support Bluetooth USB connection.Wireless playback: Eliminate the trouble of wired connection. Through wireless connection and transmission, users can enjoy high-fidelity music anywhere in the room through the wireless control of the AUX port and audio cable.Stable and Reliable TransmissionThis car USB Bluetooth AUX adapter has a transmission speed of up to 3Mbps and an effective transmission distance of up to 10 meters, ensuring smooth audio transmission. (Note: USB is only powered, audio must be transmitted via 3.5mm cable. Compatible with speakers, car audio and other devices.) 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.Plug and Play - Simple Setup Simply plug this car USB Bluetooth adapter into a USB port (for power) and connect via the 3.5mm AUX interface. Your device will pair with "YET-M1" and instantly transform into a wireless Bluetooth USB adapter without complicated setup.