ACULON A211 offers superior optical performance at an attractive price. Multilayer-coated lenses and a choice of large objective lens diameters provide extremely bright images and a wide field of view. Breathtaking visual experiences also result from the use of aspherical eyepiece lenses. Large objective lens diameter for a brighter and wider field of view Multilayer-coated lenses for bright, sharp images Aspherical eyepiece lenses for undistorted images across entire surface of the lens Turn-and-slide rubber eyecups facilitate positioning of the eyes Rubber armoring offers shock resistance and a firm, comfortable grip Tripod adapter included