Amplifier Board Bluetooth MP3 Decoder Board 4.1 Circuit Board HW-770

This is an Mp3 decoder board with an onboard Bluetooth 4.1 receiver XY-BT-Mini. This board can be powered via a battery terminal or else from the onboard micro USB port. For the output of the board, there are solder pads for the right, left and ground wires of the speakers or a 3.5 mm audio jack is also provided to connect the speakers.