Fangrui Product Details 1. Q7 Led Digital Display Car Bluetooth Receiver Hifi Sound Quality Wireless Audio Adapter 2. Features: 3. 15 Meters Barrier-free Transmission, Stable Signal, Zero Delay And No Lag 4. Suitable For Home Use Such As Carofficeentertainment 5. Supports Tf Card, Plug And Play, Built-in Smart Decoder Can Directly Play Tf Card Music, Supports Multiple Formats (mp3wav) 6. Adopt Soft-light Led High-definition Display, Real-time Display Of Usage Status, And Various Modes Are Clearly Visible 7. Equipped With Bluetooth 5.3 Chip, Better Sound Quality And More Powerful Performance 8. Four Modes Meet Your Needs, One-click Switching Between Receivingtransmittingfmtf Modes 9. Applicable To All Devices With Audio Inputoutput Interfaces On The Market, Such As Mobile Phones Connecting To Ordinary Speakers In Seconds, And Computers Connecting To Bluetooth Headsets. 10. Product Parameters: 11. Material: Abs 12. Basic Functions: Bluetooth Receiving (rx), Bluetooth Transmitting (t), Tf Card Playback, Fm Transmitting (fm Frequency Is Adjustable) 13. Supported Equipment: Speakerscarstvscomputersheadphonespower Amplifiersprojectorsmixers, Etc. 14. Bluetooth Version: 5.3 15. Transmission Distance: About 15m Without Obstacles 16. Bluetooth Mode: Bluetooth Receivingbluetooth Transmittingfm Transmitting 17. Transmission Frequency: 107.5mhz 18. Frequency Response: 87.5hz 19. Music Format: Wavmp3 20. Supported Protocols: Avrcp, A2dp 21. Input Parameters: Dc5v1a 22. Output Mode: Aux+fm Dual Output 23. Internal Card Capacity: Maximum Support 64g 24. Microphone: High Quality Microphone 25. Battery Capacity: 300mah Polymer Lithium Battery 26. Duration Of Use: About 6-8 Hours 27. Standby Time: About 30 Days 28. Product Size: 66 X 43 X 12mm 29. Product Weight: About 25g