PuttLink Smart Ball connects wirelessly to your mobile device.  Putt data is sent from the ball to the App as you putt.  True roll distance, make percentage, cup entry speed, feet of putts made, even stimp reading, are tracked for every putt.  In Drills Mode, start with accuracy and distance control for different length putts.  Then move on to making putts at firm or soft pace.  As you progress, take on the Slope Drill to train for various green slopes. Track your putting performance and progress week-to-week with stat views.   Practice smarter and enjoy putting!