The Welch Allyn Diagnostic Set with PanOptic Ophthalmoscope, Otoscope, Nasal Illuminator, Lithium-Ion (Smart) Handle, and Hard Case (Model 97210-PSM) makes performing a physical diagnosis easier and features the 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.Key Components:3.5v Coaxial Ophthalmoscope (Head Only)3.5v Halogen Lamp3.5v Diagnostic Otoscope/Throat Illuminator without Specula (Head Only)3.5v Halogen LampNasal Illuminator Section Only3.5v Lithium Ion Smart Handle with Removable AC AdapterLithium Ion BatteryHard Case for 3.5v Set