Donegan DA-2 OptiVISOR Headband Magnifier, 1.5X Magnification Glass Lens Plate, 20" Focal Length

Headband binocular visor with snap-in 1.5X magnifying lens plate for hands-free viewing Ground and polished glass prismatic lens for improved focus and reduced eye strain Visor size-adjustment knob for customized fit Visor tilts out of way when not needed 20" focal length for a variety of uses