The most powerful Laser Rangefinder in the world The Pro X7 features incredible ranging capability (550+ yards to a flag) The Pro X7 is accurate to 1/2 yard Features 7x magnification with HD optics The Pro X7 is waterproof and tour certified Slope Technology measures slope, +/- one degree of angle, and compensated range, based upon ball trajectory and type of club used All shown on an LCD display A 150-yard uphill shot of 6 degrees really plays at 166 yards Without slope compensation you would come up 16 yards short