Vortex Razor HD 4000 GB RangefinderOne device. All the range, environmental, and ballistic data you need to make the shot of a lifetime, every time. For precision shooters and open country hunters, the Razor HD 4000 GB eliminates the guesswork from longer shotsdelivering critical data for first shot accuracy at the push of a button. Designed for rugged reliability, its ready to deliver hair splitting confidence whether youre targeting a trophy above the treeline, across an open