Nikon 16224 Arrow ID 3000 Bowhunting Laser Rangefinder Nikon's advanced ID (Incline/Decline) Technology provides the horizontal distance to the target, even when ranging at various incline or decline shooting angles Incredibly long, 20.3mm eye relief makes viewing and ranging your target fast and easy Displays in 1-yard increments with a 6-550-yard ranging capacity Class 1 laser product, power output not exceeding .0975 milliwats