Callaway LR550 Rangefinder by Nikon Laser rangefinder designed to help golfers gauge distances on the course Quickly and accurately measures the pin or hazard from up to 550 yards First target mode displays range to nearest target amidst several options Built-in reticle and LCD display; 6x monocular with long eye relief Runs on 3-volt lithium battery (included); comes with matching neoprene sport sleeve