Medicus PowerMeter Before you can increase your club head speed, you need to know your speed, and the PowerMeter tells you both instantly and accurately. Hit longer and straighter shots by increasing the power of your speed. Get instant feedback to improve consistency and control. With the PowerMeter, you'll discover that trying to swing harder can actually cause you to swing slower. You'll learn how to use your body to increase clubhead speed. The Medicus PowerMeter allows you to have a controlled swing so that you consistently hit the ball farther and straighter. The PowerMeter is easily interchangeable between golf clubs. It works on woods and irons and is specifically designed to tightly fit on any shaft size. With programmable swing performance settings you can dial-in your actual golfer and club specifications. Features: Works with your driver, fairway woods, and irons Easily interchangeable between clubs Tightly fits on any shaft size Programmable to golfer and club