Headband Magnifier Unit

4 precision-ground interchangeable lenses in plastic protection case and can be used over spectacles if required. Magnification working distance: 1.2x 520-620mm (20”-24”) 1.8x 230-320mm (9”-12”) 2.5x 150-250mm (5”-10”) 3.5x 80-120mm (3”-5”) Battery operated adjustable led spotlight with switch.