Comments: I like it very much. But for me it's not "press and release". I need to press and keep pressing until the
serve ends. And on the serve you will see more than one number, the last one is the real one, the first and second are about the
movement of your preparation with the racquet. And I can't measure the ball coming from the other side of the court. To measure, I
need to be just a few steps diagonally behind the server. So, it's wonderful to measure serves in a class, but not so good for other
strokes, at least for us.