Q7 LED Digital Display Car Bluetooth Receiver HIFI Sound Quality Wireless Audio Adapter Features: 1. 15 meters barrier-free transmission, stable signal, zero delay and no lag 2. Suitable for home use such as carofficeentertainment 3. Supports TF card, plug and play, built-in smart decoder can directly play TF card music, supports multiple formats (MP3WAV) 4. Adopt soft-light LED high-definition display, real-time display of usage status, and various modes are clearly visible 5. Equipped with Bluetooth 5.3 chip, better sound quality and more powerful performance 6. Four modes meet your needs, one-click switching between receivingtransmittingFMTF modes 7. 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. Product parameters: 1. Material: ABS 2. Basic functions: Bluetooth receiving (RX), Bluetooth transmitting (T), TF card playback, FM transmitting (FM frequency is adjustable) 3. Supported equipment: speakerscarsTVscomputersheadphonespower amplifiersprojectorsmixers, etc. 4. Bluetooth version: 5.3 5. Transmission distance: about 15m without obstacles 6. Bluetooth mode: Bluetooth receivingBluetooth transmittingFM transmitting 7. Transmission frequency: 107.5MHz 8. Frequency response: 87.5Hz 9. Music format: WAVMP3 10. Supported protocols: AVRCP, A2DP 11. Input parameters: DC5V1A 12. Output mode: AUX+FM dual output 13. Internal card capacity: maximum support 64G 14. Microphone: High quality microphone 15. Battery capacity: 300mAh polymer lithium battery 16. Duration of use: about 6-8 hours 17. Standby time: about 30 days 18. Product size: 66 x 43 x 12mm 19. Product weight: about 25g