Multilayer coating multilayer coating is applied to one or more lens and prism surfaces. Tru target technology that allows you to switch between first target and distant target modes. Long eye relief provides 15mm or more of eye relief. Perfect for eyeglass wearers. Under nikons measurement conditions and reference value. under nikons measurement conditions. The specifications of the product may not be achieved depending on the target objects shape, surface texture and nature, and/or weather conditions. High quality 6x monocular. Automatic continuous measurement for up to four seconds if single measurement fails. Press and hold down the power button to activate the continuous measurement function (up to approximately eight seconds). Compact size fits in pocket. Rainproofjis/iec protection class 4 (ipx4) equivalent. The prostaff 1000 6x20 laser rangefinder puts a solid 1,000-yard maximum ranging capability into your hand, together with compact ergonomics that will fit your pocket. The 6x optical system makes seeing-and ranging-deer out to 600 yards a reality, while the tru-target system allows you to select either first target or distant target priority. Weather resistant/ rainproof construction. first target priority mode provides the exact distance to the closest object among a group of targets being measured. In this mode, you can easily range an object as small as a fence post. Distant target priority mode displays the range of the farthest target among a group of targets measured. This feature is especially useful if the subject is located behind tall grass or brush.