The olympus nature 12x50 exps i binoculars offer a wide variety of advanced features such as bak4 prisms and fully multi coated lenses to guarantee crisp sharp images even in difficult light conditions long eye relief ensures comfortable viewing for spectacle wearers and those without glasses while non slip rubberized coating and grips provide a sure hold and make the binoculars as comfortable in the hand as they are on the eye the large centre focus knob can be used while wearing gloves and