Features 1.This is 100% new and high powerful military binocular telescope. 2.Wide-range in application of interior and outdoor. 3.Three layers of lens-coating FMC for best visual enjoyment. 4.Durable and protective, Rubber-armored. 5.FMC glass lenses deliver the ultimate brightness and resolution. 6.Smooth central focus knob for quick viewing. 7.Comfortable vison with high resolution lens. 8.Appreciated for a streamlined shape and durability. Type:Binoculars Eyepiece Diameter:19mm Field Of View:68m-1000m Prism(Bak4/K9):Bak4, Porro prism Lens Coatting:FMC Feature:Powerful, Portable Attachment:With reconnaissance coordinates Applicarion:Outdoor, military, travel Coating: red film Diopter adjustment range: 4 diopters Head away from the adjustment range: 56-74mm Differentiation of panel: 5 mil / cell range: up and down the ten-division (50 mils) or so each ten-division (50 mils) Magnification: 7 times Prism: K9 Objective aperture: 30 mm Exit pupil diameter: 3.7 mm Exit pupil distance: 11.2 mm Telescope is pure optical instruments . it can not be used under the environment of all black .it is LLL night vision . its characterized to observe the target clearly by using external faint light . for example: Lighting, concert lighting, street lamp, moonlight, starlight