1. Exact Putting DistanceInBirdie does not just read the head speed of the putter to measure the distance. It measures the stroke of the ball and displays it. That's why it can provide super accurate data. 2. Fine Putting AngleInBirdie provides an accurate and fine measures of the ball's vertical launch angle. Straight trajectory is displayed as 0°, closed or open stroke is displayed as -18~+18° in minute detail. 3. User's own Putting TempoMany players say that the key factor in putting is the tempo. 3 ft. putting and 30 ft. putting should be the same in tempo. If you can achieve your own consistent tempo, you can make significant distance only with your swings. Smooth and rhythmic swings make the best putting stroke. A key to making a perfect stroke is rhythm (tempo). If the time (tempo) spent for a stroke is consistent, moving the putter faster is the only way to treat a long stroke. The faster the club head is moving through impact, the farther the ball will travel. As you see, top-class golf players show a consistent putting tempo. On days when Tiger Woods excelled at a PGA game, his tempo was almost steady, but on days when he had a poor game, his tempo fluctuated a lot. You should understand that your consistent putting tempo is the key to making a successful game. From the research of J. Novosel, a Golf Tempo Expert That's why We emphasize practice to achieve a steady tempo in putting. You can find your perfect putting tempo with In Birdie TEMPO.