The Vortex Razor HD 4000 is a top-of-the-range laser rangefinder with an impressive range of over 3,600 m, designed for the discerning sports shooting enthusiast and those looking for a precise rangefinder.The Vortex Razor HD 4000 is compact and relatively lightweight, weighing just 280 g, so this precision instrument can be comfortably worn around the neck or waist with a spring clip. The non-slip rubber armour ensures a firm grip and protects the sensitive optics from damage in the event of a fall. The device features dioptric adjustment on the right lens and comes with a standard thread for mounting on the stand.Measurement accuracy and crystal clear images in virtually all light conditions are achieved by using the HD Vortex optical system with multi-coated XR Plus coatings. Anti-reflective coatings are applied to all air-glass surfaces, guaranteeing maximum light transmission and ensuring the highest clarity and image quality even in low light conditions.The instrument's biggest advantages include a huge range of over 3600 m and unprecedented measurement accuracy. The 25 mm diameter lens has an angular field of view of 6.5° and a minimum measurement distance of only 4.5 m. The rangefinder uses HCD (Horizontal Component Distance) horizontal compensation technology, which allows accurate measurements at critical distances. It's also worth highlighting that the Vortex Razor HD 4000 has a simple and intuitive menu that takes just a few minutes to learn. Measurements are expressed in metres and yards.The Vortex Razor HD 4000 offers the following aiming modes:FIRST - Calculates distance to targetNORMAL - Displays actual target distance (up to 2200 m)LAST- Displays distance to an object in the background ELR - Measures the longest distance (up to 3600 m)SCAN function that continuously reads the distance to a moving targetHCD angle compensation mode allows calculation of the projectile's angle of flightLOS mode for interaction with a ballistic calculator. TECHNICAL SPECIFICATIONSPage informationAngular field of view [°] 6.5Linear field of view at 1000 m [m] 104Measuring range [m] 3650Min. Measuring range [m] 4.5Distance from the eye [mm] 16-19Magnification [×] 7DimensionsTotal length [mm] 114Weight [g] 280Objective diameter [mm] 25