Callaway Golf 300 Pro Laser Rangefinder. Enhance your golfing experience with the Callaway Golf 300 Pro Slope Laser Rangefinder. This top-of-the-line rangefinder is designed to provide you with accurate distance measurements on the golf course. With its sleek red design and waterproof features, it is the perfect accessory for any golfer. The Callaway Golf 300 Pro Slope Laser Rangefinder is packed with innovative technology, including slope switch technology and laser sensors, to ensure that you have the best view of the fairway. This compact and lightweight rangefinder is easy to carry around, making it the perfect addition to your golf bag. Get the edge on your next golf game with the Callaway Golf 300 Pro Slope Laser Rangefinder.