One device. All the range and ballistic data you need to make the shot of a lifetime, every time. For precision shooters and long-range hunters, the fully loaded Razor HD 4000 GB accelerates your speed to target, helping you range with first-shot confidence at pushbutton speed. Rugged. Reliable. Whether targeting a trophy above the treeline, across an open prairie, or ringing steel out to 4000 yards, the Razor HD 4000 GB delivers all the range, ballistic, and environmental data you need for absolute accuracy when and wherever opportunity happens.