Originally designed for military and tactical purposes, the Opti-Logic M1K 1000m Waterproof Laser Rangefinder w/ VAC 00611 is a hunter-friendly unit with sports specifications that anyone in pursuit of big game will appreciate. with a rubberized housing, this Laser Range Finder from Opti-Logic is field-ready with exceptional 6x magnification optics and a simple, easy to understand internal LCD display. This easy-to-use Opti-Logic M1k 1000m WP Laser Rangefinder w/ Vertical Angle Compensation ranges from 4-1,000 meters with 1-yard resolution in .5 yard increments while also denoting shot angle via Opti-Logic's Patented VAC (Vertical Angle Compensation) Technology displaying with 1 degree increments. Built with the multi-season hunter in mind Opti-Logic's VAC Technology compensates for archery trajectories of up to 120 yards and those of firearm ballistics from 121 through over 1,000 yards. Equipped with an automatic rain, scan, line of sight trajectory and VAC modes the unit offers a ranging solution for any hunting situation. The Opti-Logic M1k 1000m Sporting Laser Rangefinder w/ VAC is a perfect partner for any outing and every shot you take will be accurate.