Nature Trek binoculars come complete in a shock resistant polycarbonate body, providing a robust yet lightweight casing. All models are nitrogen purged to avoid fogging and they are sealed to be fully waterproof. The inner focus optical design produces stunning optics. The high resolution image ensures no details are lost when viewing at long or short distance. Close focus distance is 2m = 2.5m. The effortless focusing and impressive depth of field makes these binoculars quick and easy to use. Twist-up eyecups make viewing easy with spectacles or sunglasses. Diopter adjustment is smooth to operate making set-up easy. The come with a protective lens cover and carry case. Features high grip waterproof body, BAK 4 Prisms, and are water and fog proof.