PROFESSIONAL METAL OTOSCOPE OPHTHALMOSCOPE KIT. 2.5V STANDARD ILLUMINATION. CORRECTIVE LENSES RANGING FROM 0 TO +20 & FROM 0 TO -20 DIOPTERS, SINGLE LARGE CIRCLE APERTURE. CONNECTION FOR PNEUMATIC OTOS-COPY. BATTERY HANDLE FOR 2 C BATTERIES. REUSABLE SPECULA 2, 3, & 4 mm. INCLUDED. AVAILABLE IN BLACK / MARON FAUX LEATHER GIFT CASE