The DropTine HD Binoculars bu Burris combine reliability, affordability, and performance that all Burris optics are known for. They utilize a roof prism optical system and multi-coated lenses to deliver ideal image quality in adverse lighting conditions. Features: Roof prism optical systemMulti-coated lenses8x magnification Burris DropTine HD 8x42 Binoculars 300278