Fangrui Product Details 1. Bluetooth Audio Adapter Nfc Bluetooth Receiver Transmitter 2 In 1 With Remote Control 2. Built-in Nfc Sensor Chip, Cell Phone Contact Connection 3. Rich Interface, Strong Compatibility, Support All Kinds Of Audio Interface R L Interface, Aux Interface, U Disk Playback, Tf Card 4. 5-8 Meters Infrared Remote Control, More Convenient Operation 5. Rx Receiving Mode, Bluetooth Wired Speakers Into Bluetooth In Seconds, Open Your Home Theater Like Stereo Sound Quality Atmosphere 6. Amplifier Device To Let, Cell Phone Connection Is More Intelligent, To Achieve Long-distance Control Of Music Playpausevolume Adjustment, Etc 7. 500mah High-capacity Battery With High Endurance And Low Power Consumption 8. 30m Range Connection, Long-distance Barrier-free Transmission, External 2.4g High-frequency Bluetooth Antenna, Signal Stability Without Lagging 9. Bluetooth 5.1 Technology, Compared With Other Chips, Lower Power Consumption, Faster Transmission, Anti-interference, Stable Signal 10. Parameters: 11. Product Material: Abs 12. Bluetooth Version: V5.1 13. Input Power Supply: Dc 5v 14. Transmission Distance: 30m 15. Battery Capacity: 500mah 16. Charging Interface: Тyре-c Usb-c 17. Product Interface: Aux Interface, Rca Red And White Interface, U Disk Playback, Tf Card Playback 18. Remote Control: With Infrared Remote Control (built-in Cr2025 Button Battery) 19. Size: 90 X 58 X 21mm 20. Weight: About 200g