The Razor HD 4000 is the essential companion for the extreme hunter, archer and shooter. The extremely effective angle compensated laser rangefinder features four targeting modes (Normal Mode, First Mode, Last Mode, Extended Laser Range Mode) for any ranging environment. The primary HCD (Horizontal Component Distance) range mode provides key angle compensation range information required by the vast majority of shooters in a simple, quick to read display. The Razor HD 4000 also has a LOS (Line of Sight) range mode and scan feature.Specifications and Features: Angle Compensation: Yes Battery Type: CR2 Battery: CR2 Exit Pupil Diameter: 1.3-1.3 Millimeter Eye Relief: 16-19 Millimeter Field of View @ 1000 Yards: 341.25 Feet Lens Coating: XRPlus Fully Multi-Coated Magnification: 7 Minimum Range Distance: 5 Yards Nonreflective Target: 2200 Yards Reflective Target: 4000 Yards Tripod Adaptable: Yes Warranty: Vortex VIP Unconditional Warranty