Surgical Operating Loupe Binocular 3.5x Magnifying Glass For Dental And Surgery Specifications * Magnification: 3.5 x * Visual Field Diameter: 50mm * Working Distance: 420mm (16 inch) * Weight: 100 Gram Without Box Features * Large Field Of View Bright Clear Image * Long Lasting and Comfortable * Swing Out Of View * One Can Use His Power Glasses in the Same Frame |