A wireless electronic arrangement configured to connect to an earphone arrangement may include a signal generator to generate an electric signal to be sent over the earphone arrangement; a measuring arrangement to make at least one measurement of the electric signal to determine a value indicating a current acoustic impedance of the earphone arrangement; a control unit to compare the determined value with a stored value indicating an operational acoustic impedance stored on a memory unit and, based on a result of the comparison, to select an operational mode of the wireless electronic arrangement based on the determined state of the earphone arrangement.