Car Plug-In Card Bluetooth AUX Audio Receiver 1. Bluetooth protocol: AVRCP\A2DP\HFP\HSP 2. Output interface: 3.0mm 3. Audio signal-to-noise ratio: 90dB 4. Charging time: 2 hours 5. Universal compatibility, seamlessly connect to any AV receiver or powered speaker via 3.5mm jack to enhance audio settings 6. Extended playback time, built-in 200mAh battery, enjoy up to 20 hours of music, ensure lasting audio enjoyment 7. Remote connection, control your music from 10 meters away, providing a range of wireless audio experience 8. Support CVC call noise reduction technology, built-in power isolation module, interval noise current, call like face to face 9. Support TF card playback, no need to connect to the phone with Bluetooth, you can enjoy music 10. Back clip buckle, firm and not falling, can be easily clipped on clothes, easy to carry 11. Bluetooth 5.0 chip, multi-data transmission is more stable, wireless coverage is wider, low power operation is more power-saving 12. After the first successful pairing with the device, it will automatically connect when powered on 13. Dimensions: 5.5x2.3x1cm 14. Weight: 32g