Exceptional Brightness in Keeler’s Revolutionary Design For examinations that require more light intensity, All Pupil II provides exceptional brightness along with enclosed coated optics guaranteeing bright, clear retinal images. Features Light, bright and easy to use Control illumination with rheostat on headband Outstanding brightness for difficult exams Lightweight and comfortable, the new design weighs just 520 grams Extra padded materials make the headband extremely comfortable Simple controls, with a unique single lever to change aperture size to adapt to all pupil sizes IR and UV barrier, which guarantees improved patient protection and safety PD Range: 47-75mm Requires optional power transformer