The GPO FLAGMASTER(TM) 1800 Golf Laser Rangefinder will make your game better by merging exceptional optical performance with the latest rangefinding technology. It is equipped with a fast-focus ocular which helps you locate the object you want to range. Center that object in the view-finder reticle, press the button and the FLAGMASTER(TM) will quickly calculate the actual or slope distance for you. Know your distance and elevate your game.