The electronic assembly may include a flexible circuit board, a sensor, and a receiver. The flexible circuit board may include a first face and a second face opposite to the first face. The sensor may be disposed on the first face of the flexible circuit board and electrically connected to the flexible circuit board. The receiver may be disposed on the second face of the flexible circuit board. A sound channel for the receiver may be communicated to outside bypassing the flexible circuit board or through the flexible circuit board.