First pivot bodies are received for rotation in first recesses in the housing member. A language is selected by a user and the graphic elements are displayed with text portions in the selected language. Using a circuitry operable or programmable to repeat and skip stimulation settings, a complex stimulation set may be created. The heat exchanger also causes the fluid product to increase in temperature. The transformer directly electrically decouples the two radiofrequency terminals from the active mixer unit, and couples the first circuit section and the second circuit section together such that each of the two circuit sections is separately supplied with a full operating voltage of the integrated circuit. The water base ink for ink-jet recording is usable for an ink-jet recording apparatus provided with an ink-jet head having a metal member which is composed of nickel or the alloy containing nickel and which is disposed at least in an ink supply passage for supplying the ink to a discharge section.