This series of products is one of the basic tools of an ENT doctor. They are used to look in/on eye, ear, nose, mouth, and skin. The handle contents a battery and a light source. A clip includes the on/off switch (also 50% power level). The lamp will be turned off, if you put it into your front pocket by the clip in which the switch is included. The additional functional parts on top are based on their category shape to make it easier to differentiate which part has which function. Consistent characteristics are linked to an overall „Heine“ design.