CALLAWAY PRO 300 RANGEFINDER WITH MAGNA HOLD Course tested--excellent working condition The Callaway 300 Pro RangeFinder with Slope is a high-quality rangefinder designed specifically for golf enthusiasts. With the brand reputation of Callaway, you can trust in the accuracy and reliability of this tool. The built-in slope feature helps you better understand the lie of the land on the golf course, giving you a competitive edge in your game. Perfect for improving your distance and shot placement, this rangefinder is a must-have for any golfer looking to enhance their skills.