Benefits Faster swing & club head speed (11~135 MPH) Longer Distance (25~330 Yards) Improved tempo & rhythm for accuracy Optimal point of impact for speed & distance About The Swing Caddy PRO is the latest addition to the Swing Impact line-up. It is the best golf swing trainer for improving your golf swing speed, club head speed, distance, rhythm, and tempo. The PRO version is for golfers with faster swings (11~135 MPH) & longer balls (25~330 Yards). The Control Scale The Swing Caddy PRO's steel head uses "Sinker Spring Loaded Magnet" technology with FOUR International Patents (USA, China, Japan, and Korea). The adjustable Control Scale allows golfers to adjust and practice club head speeds from 11 to 135 MPH, or adjust for desired distance, 25 to 330 yards. The Control Scale uses a dual-click system to provide INSTANT FEEDBACK to help develop the optimal rhythm & tempo for wedges, irons, woods, & drivers. How-to Use Adjust Control Scale for desired swing speed (11~135 MPH) or yardage (25~330 yards) Begin backswing and downswing Complete swing with follow-through Adjust your swing's rhythm & tempo so the first "CLICK" is at the point of impact (i.e. your ideal ball position) Note: If first "CLICK" happens too early, then the swing is too fast. If first "CLICK" happens after your ideal ball position, then the swing is too slow. Specs & Features Length 36" Adjustable Control Scale for club head speed or yardage Measure Swing Speed: 11 - 135 MPH Desired Distance: 25 - 330 YARDS Dual-click System for Instant Feedback Improves rhythm & tempo for desired swing speed Great for Warm-up & Stretching