Leupold's RX series of laser rangefinders sets new standards of rangefinder performance and incorporates a wide variety of functions including 13 selectable reticles, fold-down rubber eye cup and advanced digital instrument panel with digital signal processing, accurate range ??1 yard, clicking fast focus eyepiece and True Ballistic Range??? for most popular rifle loads and archery ballistics. True Ballistic Range gives a firearm or bow hunter the correct range when shooting up or down hills for precise shot placement all the time, every time!