Welch Allyn MacroView Otoscope 3.5v Halogen Lamp : 3.5v MacroView Otoscope with Specula (head only)30% higher magnification over standard otoscopes. Nearly a full view of the tympanic membrane. Ability to focus to fine tune the view. Greater tip retention and easier tip removal. Fiber optics produce cool light with no reflections, no obstruction.