BR03 Card Car Bluetooth 5.0 Receiver Speaker Music Wireless Audio Receiver Bluetooth Hands-free Call 1. The BR03 Bluetooth receiver adds Bluetooth and hands-free calling capabilities to existing wired audio systems. 2. What it does: Connect to any wired audio system, such as a speaker. Car stereo, etc., and then wirelessly pair with any smartphone, tablet (Android, iOS, etc.) or other Bluetooth-enabled A2DP transport device via Bluetooth connection. Once paired and connected, your wired headphonespeakerstereo system can receive music wirelessly from your smartphone, tablet, etc. 3. The bluetooth 5.0 + EDR 4. Bluetooth transmission distance is 12m 5. Bluetooth hands-free calling is supported 6. Support TF card playback 7. Support answering, hanging up, rejecting, callback and other phone functions 8. Support echo cancellation and noise suppression (CVC) technology during calls 9. After disconnecting the Bluetooth connection for 5 minutes, the product will automatically shut down. 10. Accessories: Instructions x1 Aux adapter x1 Charging cable x1