The 8x42 TrailSeeker ED binocular provides high-level outdoor performancea perfect choice for avid birders, hunters, and outdoor enthusiasts. TrailSeeker ED is packed with optical, mechanical, and ergonomic features that make it comparable to binoculars costing two to five times as much. Features: Extra-Low Dispersion (ED) objective lenses provide superior images virtually free of chromatic aberration with accurate color reproduction, increased resolution, and contrast Fully multi-coated optics for maximum light transmission through the optical path Phase and dielectric coated BaK-4 prisms for vivid, true-to-life colors Lightweight and durable magnesium alloy body is coated with rubber Fully waterproof and filled with dry nitrogen gas to prevent internal fogging of lenses California Residents: Proposition 65 Warning - www.P65WARNINGS.ca.gov