After many years of practice I decided to take the plunge and invest in a pair of loupes. As a typical middle aged male I embarked on testing every brand I could. I was told by many companies that 3x magnification was adequate for examinations and 5x for close up specialist single tooth work. Rubbish! The stand out feature of the xenosys 5x , apart from the robustness of the design was the width of field and clarity achieved. How Connor and his team have achieved this quality at competitive prices is akin to optical alchemy ! Add in exceptional service and I cannot understand why you would purchase any other brand. Thankyou for opening my eyes to the mouth!