20X larger viewing area when compared to a standard or pocket ophthalmoscope * Enhance eye exams with the PanOptic Plus featuring QuickEye alignment technology that supports better alignment to the optic disc a common challenge with eye exams * Long-lasting LED illumination cuts down on need for lamp replacement * Compatible with all Welch Allyn 3.5 V power handles and wall transformers * Apertures Small Large Red Free Slit Fixation target Cobalt Blue * Diopter Range -20 to +25 D * Warranty 5 years