3.7-5V Mini Bluetooth Stereo Audio Receiver Board Module With Mic for arduino MP3 Player Bluetooth Lossless Decoder Board With microphone and switch Microphone with switch with case BT5.0-Audio PRO

Bluetooth 5.0 With microphone and switch Power supply: 3.7-5V Signal-to-noise ratio: 90DB Total Harmonic Distortion Noise: -70dB Crosstalk: -86DB Support profiles: A2DP/AVCTP/AVDTP/AVRCP/HFP Transmission distance: 15M (open without partition) Decoding format: WAV APE FLAC MP3 lossless decoding, stereo output BT5.0-Audio PRO new features: While charging and discharging: This product has a circuit of charging and discharging, which can be powered by USB power supply, and truly realize the function of charging and discharging. Solve the pain points that some products cannot be used during charging. When powered by a single USB: the red light flashes, indicating that the power supply is normal. When powered by a single battery: the yellow light is always on, indicating that the battery power is normal; the yellow light is flashing, indicating that the battery is low. When the USB and the battery are connected at the same time: the red light flashes to indicate that the battery is being charged; the red light is always on to indicate that the battery is fully charged. (Note that if the USB input is suddenly disconnected during the charging and discharging process, there will be a few seconds of interruption due to the switching of the charging and discharging mode, and then the Bluetooth will automatically restart, automatically connect and maintain the previous playback state) Incoming call voice call function: After the Bluetooth connection is complete, turn on the call audio mode in the Bluetooth settings. If the phone calls, you can answer or hang up the call through the PLAY/STOP button. You can choose to send the call from the microphone of the original headset (provided that the headset has the call function, which is 4-stage) or send the call from the onboard microphone When the computer sound card is used: Solder the pads in the two boxes corresponding to the Sound Card on the back of the module, and then connect it to the computer USB interface through the usb cable, which can be used as a sound card. That is, the sound played by the computer is output through the audio interface of the module. (not enabled by default) List: MP3 decoder board*1