The X5 Primal 10×42 HD Binoculars utilize a lightweight magnesium alloy frame that can handle the most rugged applications while adding minimal weight to your kit. Featuring Riton HD glass, the X5 Primal 10×42 HD binos have the clarity to be utilized all day without eye fatigue and robust enough to trust for generations to come. Features100% waterproof and fog-proofBAK 4 prismsFully multi coated lensesRiton HD Glass Riton Optics X5 Primal 10x42mm HD Binoculars 5P1042