The Nikon COOLSHOT 20i GII Golf Laser Rangefinder is designed to provide remarkably fast & accurate distance measurements for every shot. The Rangefinder is even able to provide accurate distance measurements with slopes (elevation changes) included. Nikon’s ID Technology assists in eliminating second-guessing on how far downhill or uphill a shot will play. The ID Technology helps you get the slope-adjusted distance, which allows you to select the right club and trajectory for your shot. The Rangefinder complies with USGA Local Rule 14-3 for tournament play when Slope is turned off (actual distance mode). "First Target Priority" displays the range to the nearest target out of the multiple results that are provided. This guarentees that the measurement being viewed is the pin & not any of the objects in the background. "8-second continuous measurement", is enabled by pressing and holding down the power button, & will continuously measure the range for approx. eight seconds. This feature can be useful when trying to find measurements of very small or thin objects, & provides you with the distance to pins, hazards, mounds, & trees with just the push of that button. This allows you to have the ability to scan the green & find a flagstick. The Rangefinder also features Nikon's glass & multicoating technology, which provides you with clear, high contrast views. Its 6-power monocular long eye relief for those wearing glasses, & features an adjustable diopter for tack-sharp focusing.