8x magnification objective lens diameter 42mm fully multi coated optics phase and dielectric coated prisms ed extra low dispersion lens glass 78deg angular field of view top hinge magnesium chassis strong yet durable waterproof fogproof and nitrogren purged 172mm eye relief tripod compatible celebrate wildlife at its finest with the praktica marquis series binoculars developed with advanced features for a superlative performance these 8x42mm binoculars are the perfect companion for birdwatc