The Blue Tees S2 Pro Slope rangefinder gives you the confidence you need to play your game. It expertly dials in your distances and makes club selection easy. S2 Pro Slope is the perfect combination of size, accuracy, and advanced technology. In addition, it is simple to use, water resistant and equipped with adjustable EZ Optic Focus. Additional features include Slope technology that adjust distance based on incline/decline, pinpoint accuracy to measure targets up to 800 yards, and Flag Lock/Pulse Vibration to confirm when the target is locked.