10x magnification objective lens diameter 42mm fully multi coated optics phase and dielectric coated prisms ed extra low dispersion lens glass top hinge magnesium chassis strong yet durable waterproof fogproof and nitrogren purged extended eye relief tripod compatible celebrate wildlife at its finest with the praktica marquis series binoculars developed with advanced features for a superlative performance these 10x42mm binoculars are the perfect companion for birdwatching hunting safari and t