Feature rich 2.5V Pocket Ophthalmoscope provides all of the features, none of the bulk.

The 5112N series features:

Five aperture selections (small spot, large spot, semicircle, fixed, and red-free filter)

Nineteen viewing lenses from -20 to +20 diopters for better resolution

Illuminated magnified lens dial

Rubber brow rest

Choose from 2.5V  LED lamp for true tissue color

AA battery handle (batteries included) with on/off power switch integrated into pocket clip

Two-year instrument warranty, lifetime warranty on optics and LED lamp

Meets or exceeds ISO 10942, ISO 15004-1, and ISO 15004-2