A vehicle includes a direct current power supply, an electric circuit supplied with a current from the supply, a connector with relays that connects and disconnects a path supplying the current to the circuit, and a voltage sensor that monitors the path between the connector and the circuit. In an embodiment, the device further comprises a plastic member including a smooth surface for contacting the user’s skin adjacent the target pain or injury area, a magnet sandwiched between the hook-like members and the plastic member for generating a magnetic field in the target pain or injury area under the user’s skin, and a keeper for placing outside a user’s clothing. The invention also relates to a cosmetic treatment method involving the topical application of a composition comprising at least one reducing alkyl-sugar monomer having a hydroxyl function which is substituted by an alkoxy radical at C2-C40. Active control objects for calling the operational objects are contained within the container object. The base material includes a primary component and a secondary component, the primary component including Al2O3 and the secondary component including tetragonal-ZrO2.