The Vortex Kaibab HD 18x56 binoculars have been designed for long-distance observation. Huge magnification will allow you to see even the most distant target up close. These binoculars will also work well for observing the night sky or ornithology. The high quality of optics is ensured by glasses made in HD technology. Due to the enormous magnification, the binoculars are designed to be used with a tripod. Optics APO lenses - the use of indexed lenses ensures accurate color reproduction in the entire image spectrum HD lenses - the highest quality glass (high density), which is characterized by very low dispersion, provides excellent resolution and color saturation XR plus lens coating - Vortex's patented multi-layer coating on the XR plus lenses further improves light transmission, which in turn ensures excellent image brightness dielectric prism coatings - see the world in true colors even in difficult lighting conditions plasma tech - the outer part of the lenses against scratching and destruction of the anti-reflective coating phase correction - in binoculars with a roof prism, it increases the optical resolution and contrast of the image seen Case roof prism - the use of a roof prism allowed to increase the strength and keep the compact size of the binoculars waterproof - o-ring seals prevent the penetration of moisture, dust and dirt, which improves the reliability of the telescope in all conditions resistance to dew - filling with argon prevents dew inside the telescope in a wide range of temperatures ArmorTek - lens glass in good condition and without scratches for many years. ArmorTek technology is a hard and scratch-resistant coating that protects the outer lens from accidental damage, oil and dirt Amenities rubberized housing - this type of housing prevents the binoculars from slipping out of your hands, as well as increases its resistance to mechanical damage adjustable eyecups - now whether you wear glasses or not, you can adjust the setting of the eyecups to your needs. central focus adjustment - focus adjustment was set between the eyepieces. This allows you to quickly and conveniently adjust the depth of field. diopter adjustment - if you have a vision defect, you can easily adjust the diopter so that you can use the binoculars without glasses. the option of attaching an adapter to a tripod - during long observations, the option of placing the binoculars on a tripod is extremely convenient and useful. It is necessary to use an adapter that is screwed to the binoculars to be able to set it on a tripod.