The Hawke Nature-Trek 10x50 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, 10x 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 of 2-2.5m. All Nature-Trek binoculars are nitrogen purged to avoid fogging and they are sealed to be fully waterproof.