35X Portable Binocular Loupes 420mm Working Distance Optical glasses (Blue)Features: 1 Flip grip 2 Ultra Light Weight 3 Flexible Headband 4 Safety Soft Touch Frame 5 Large Depth Field of View 6 Adjustable Angular Viewing 7 One Step Pupillary Adjustment 8 convenient 420mm Working Distance 9 Handy Protective carry case content: 1 x Main glass 1 x Ad..