With sleek ergonomics and feature-packed performance, Nikon's ProStaff 7 rangefinder is built for precision, speed and consistency. The LCD screen switches the trajectory-compensating BDC reticle from gray LCD to orange LED for exceptional subject-to-background contrast. The ProStaff 7 ranges from 11 to 600 yds. in impressive .1-yd. increments. Nikon's ID Technology that compensates for various incline or drop-shooting angles. Spot On™ Ballistic Match Technology helps you discover all the exact aiming points on the BDC reticle at different yardages for any ammunition or load. All of this makes for easier and more accurate ranging and shooting from treestands or steep embankments as well as from flat terrain. Bright, multicoated 6X optics with generous 18.3mm-long eye relief. Single-button operation. Waterproof and fogproof, nitrogen-filled construction. It runs on one CR-2 battery (included) and powers down after eight seconds of idleness for battery conservation.