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magnification:4X , Material: optical lens ,4 kinds of working distance : S(340mm), R(420mm), L(500mm), XL(550mm). Please notify us you need which working distance after place order.How To Choose Your Loupes Determine your working distance, which will also automatically determine your field of view. While working on a friend or family member have someone measure the distance from your eyes to your patient's : this is you working distance. Choose the distance that is closest to the selection we offer.IF you are a dentist , your height is in the range from 160cm to 180CM,we recommend regular (420mm) working distance.
IF you're a surgeon, you are sitting while working, your height is from 160cm to180cm, we recommend working distance R (420mm ). IF you are standing while working, your height is from 170cm to 180cm, we recommend L (500mm) working distance, even XL(550mm) working distance will be OK.
Color: Black,Frame: sport frame, Field Of View: 55-65mm,Viewing Angle: 20-150,Depth of field: 80mm ,Weight: 80g
Certificate: ISO9001:2008,CE