The hawke nature trek 12x50 binoculars feature an inner focus optical design in a shock resistant polycarbonate body providing a clear viewing experience in a robust yet lightweight casing these feature packed 12x high magnification binoculars bring you closer to nature and a brighter viewing experience thanks to the large 50mm objective lenses additional features include twist up eye cups a dioptre adjustment bak4 roof prism design fully multi coated lenses and a close focusing distance