B21 Bluetooth 5.0 Audio Receiver AUX RCA Output U-disk Playback

1. Product model: B212. Supported devices: Two mobile phones can be connected3. Output interface: 3.5mm stereo RCA left and right sound channel4. Function description: U disk, hands-free call,5. Bluetooth protocol: AVRCP, A2DP6. Frequency range: 2400-2483.5MHz7. Frequency response: 20Hz-20khz8 output power: 28mW RL=16Ω9. SNR: >90dB10. Total harmonic distortion: <0.1%11. Supports SBC and AAC12. Forward transmission distance: 10 meters13. Support Micro USB port 5V power supply