Bluetooth 4.2 Transmitter Receiver Board MP3 Decoding Sound Card Module M1Y7
Different from normal Bluetooth connection, most car models are not recommended to connect to car Bluetooth.
The recommended mode is to hold down the button (long press) and then power on, not to press the button once it is powered on.
If you think the buttons can be adjusted, they should be small first and then large, making it easy to insert and lift

Material: PCB
colour: As shown

Package Contents:
1 x Bluetooth 4.2 Audio Transmitter Receiver Board version with microphone