Designed for professional golfers, the Nikon COOLSHOT 80i Laser Rangefinder delivers accurate distance reading for targets situated on slopes. The rangefinder sports a class 1 eye-safe IR laser that offers measurement accuracy of ±0.75 yds/m up to 700 yds/ms and ±1.25 yds/m above it. The CoolShot 80i also compensates for the uphill and downhill slopes. With HYPER READ algorithm, the rangefinder offers fast and stable distance measurement to the target. The First Target Priority mode comes in handy when finding the closest subject when viewing overlapping subjects. The in-view LED displays the measured distance in 0.5 yds/m increments. After being idle for 8 seconds, the rangefinder automatically switches off to preserve its battery. This Nikon rangefinder has an IPX4-rated waterproof, impact-resistant plastic housing. A textured slip-resistant grip is also incorporated for providing a firm hold on the unit. The Nikon CoolShot 80i is powered by a single CR2 coin-cell battery.