First A-series models to feature ED (Extra-low Dispersion) glass elements, assuring a clear, high-contrast view of the image field and effective compensation of chromatic aberration - 32-millimetre-diameter objective lenses to assure outstanding viewing performance in a compact, lightweight body. - Application of a full multi-coating process and a special coating process designed to optimise light transmittance, assuring a bright, clear view of the subject with minimal glare and ghost images. - Waterproof construction equivalent to JIS Class 6 standards for dependable use in adverse weather conditions. Combining easy portability with premium optical features, Pentax AD 7x32 ED Binoculars are designed for on-the-go glassing. You'll see sharp details of distant objects with the 7x magnifying power, and the 32mm objective lenses gather plenty of light while allowing a compact and lightweight form factor. Extra-low dispersion glass corrects for chromatic aberration to ensure colors are accurately rendered, and fully antireflective-coated optics maximize light transmission through the entire optical path to make views appear bright and crisp, especially in low light. Complementing the optical performance is a housing that is built for a lifetime of rugged outdoor use. The chassis is made of grippy, comfortable-to-hold thermoplastic elastomer resin. The optical tubes are nitrogen filled to resist internal fogging from sudden temperature changes. With the optional TP-3 adapter, you can mount the binoculars on a tripod for hands-free, no-shake viewing. Whether birding, sightseeing, exploring the backcountry, or seeing the stage at a music festival, this optic will assure a great view. Bright, Clear Viewing: The AD ED provides a bright, clear view of the subject with minimal glare and ghost images, thanks to the application of a full multicoating process to all lens surfaces, and a special coating designed to optimize light transmittance. ED Glass Optical Elements: As the first models in the PENTAX A series to incorporate ED (extra-low dispersion) optical elements for effective compensation of chromatic aberration, these binoculars deliver a sharp, high-contrast, blur-free image. Compact, Lightweight Design: While incorporating objective lenses with a 32mm diameter to assure superb operability, these models are designed to be compact and lightweight for easy carrying in a wide range of applications, from bird watching and nature observation to the viewing of sports events and concerts.