Temperature dependent biasing for leakage power reduction. One of the features of the present invention is a polypeptide having an activity of asymmetrically reducing 3-oxo-3-phenylpropanenitrile isolated from a microorganism belonging to the genus Candida to product -3-hydroxy-3-phenylpropanenitrile, DNA encoding the polypeptide and a transformant of producing the polypeptide. The particle size of the cavitating agent in the core layer is selected to achieve a desired appearance, especially luster, of the metal layer. The device provides an enhancement of the calibration and hence the accuracy of barometric altimeter measurements with the aid of derived altitudes from a GPS.