A reversible door, having a defined top, includes two notches on opposite sides of the door. The piezoelectric actuator includes a base member and three or more piezoelectric element members in which plural piezoelectric elements are formed by slits. Then assembling the descriptive information into a media recording information packet and sending the media recording information packet to a server computer, resulting in a collection of user preference information related to the playing media recording. The thicknesses of the various layers are optimized to have an increased resistance to mechanical shock resulting from, for instance, a drop onto a hard surface. The lanyard comprises integral electrodes or other sensors, auxiliary components and electrical connections thereto.