Electronic control system for a submarine actuator, said actuator comprising a container body, from which a drive shaft projects that is suitable for inserting in a seat of said submarine device. The pharmaceutical sustained release topical preparation is provided in a varnish or spray form for treating the nail and surrounding tissues, where the active ingredient is an antifungal agent, a keratolytic agent, or preferably a combination of an antifungal and a keratolytic agent. The motor drives the gear device, which engages with the guide screw rod, causing the scanning module to move back and forth to scan a document. The third conductive portion is connected to the first conductive portion at an adjacent edge. ; the flexible polyurethane foam of the cell number of 50 is held between the metal molds, and compressed and heated in the electric furnace in this state at 180\xb0 C. The bone conduction is performed without the projections because the vibration can be generated over the whole surface of the multi-functional subminiature speaker, such that loss of the magnetic force transmitted to the vibration coil is minimized by disposing the magnets on both inner and outer sides with respect to the vibration coil.