3.5v Standard Ophthalmoscope

Halogen light for true tissue color and consistent, long-lasting illumination Apertures available: micro, small, large, fixation target, slit, red-free filter 28 focusing lenses with a range of -25 to +40 diopters Rubber brow rest prevents scratching of eyeglasses Compatible with all existing Welch Allyn 3.5 V power sources Look for the traditional "flat-top" design you've come to trust