Main Feature: 1. Go with the car, free your hands, and automatically start when the power is on. It is very suitable for use in the car or other places where it is needed. It has the function of an automatic start-up. 2. Hands-free calling and navigation broadcast: built-in microphone for hands-free calling one-key answer or redial or hang up calls. 3. Wireless Music Streaming: Stereo music streaming to non-Bluetooth headphones and speakers or amplifiers or home music systems. 4. Compact Design: Ultra-compact and lightweight, it is convenient to use with various devices and HIFI sound on the go. 5. Super stable connection: Our Bluetooth audio adapter is equipped with a Bluetooth 5.0 chip for stable pairing, fast transmission, and a wide signal range (33 feet). With a 3.5mm AUX interface, it can be connected to non-Bluetooth car audio systems, home audio systems, wired headphones or speakers, power amplifiers or home theaters, etc. 6. Automatic memory connection: This Bluetooth receiver will automatically connect to the latest pairing when the Bluetooth device is turned on next time. 7. Gold-plated 3.5mm plug, not afraid of oxidation, better sound quality. 8. Update to connect 2 devices at the same time, enjoy music and never miss a call. When pairing a second phone, disconnect the paired phone from Bluetooth. After the second phone's Bluetooth is paired, turn on the first phone's Bluetooth, so that both phones will be paired. Package includes: 1x Bluetooth 5.0 Audio Receiver Adapter 1x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.