Slope technology: device measures angle of incline/decline then calculates the slope adjusted distance Features: Ultra Compact, lightweight device P.A.T. (Pin Acquisition Technology) " Lock onto the pin up to 275 yards away 6X Magnification; Range: 5-800 yards Scan landscape to acquire multiple targets Measure in Yards or Meters Superior Accuracy (+/ " 1 Yard) Water/Fog Proof