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.