Performing a physical diagnosis is easier with Welch Allyns medical diagnostic instruments featuring our exclusive Halogen HPX™ lamps that provide brighter, whiter light than standard halogen lamps for true tissue color and long lasting illumination. Built for durability, ease of use and comfort, these instruments will provide you with lasting satisfaction. The Welch Allyn® 3.5v Diagnostic Set with Coaxial Ophthalmoscope, MacroView Otoscope, Convertible Handle, and Hard Case Model 97200 MC features: • 11720 3.5V Coaxial Ophthalmoscope with patented coaxial optics offering a greater field of view, shadow free spot, and easier entry into the patients pupil. Special polarizing filter reduces corneal reflection by 99%. • The 23820 3.5v MacroView(TM) Otoscope with built in throat illuminator provides 30% more magnification and twice the field of view of traditional otoscopes, along with the ability to adjust the focus. • 71000 C Convertible handle, with chrome plated brass knurled finish, can be powered by either a NiCad rechargeable battery or 2 C cell batteries. • Handle accepts all Welch Allyn 3.5V heads.