The Meostar 10x42 HD Binocular from Meopta is a solid, high performing optical instrument. HD extra-low dispersion fluoride objective lenses lead this list of optical enhancements. The HD elements afford higher contrast, vivid color fidelity, and elimination of chromatic aberration or color fringing. A wide field of view, an extremely flat field and comfortable handling add to the stellar features of this binocular. Meopta's proprietary MB550 Ion Assisted lens coatings present superior optical performance regardless of the viewing conditions. Meopta recommends this glass for observing at longer distances or for maximum detail. Birding and all-around nature watching achieve the finest details at the greatest distances.