CaddyTek Golf Laser Rangefinder with Pin Seeking and Slope Compensate Distance, CaddyView V2+Slope Patented One step "Mode-Switching" between Non-Slope and Slope compensation distance display 6X Magnification, IPX4 Waterproof design, Weights Less than 8 oz Range: 5 to 800 yards (5 to 250 yards to golf flag) . Accuracy: +/- 1 yard FlagSeeking technology: Easily get the distance to the flagstick while ignoring subjects behind the green such as the bush and trees Conform to USGA, R&A Rules of Golf, and USGA Handicap Guidelines when the slope compensate distance feature is disabled.