*** IMPORTANT: GSA PRO works with MX-G102i device ONLY *** GSA PRO is the application available on the market that enables golfers to instantly learn about their golf swings with ease. It records your swing motion and sends the information straight to your smart phone by using this GSA PRO app. Amongst the many features like calculating your tempo, Face Angle, Club Head Speed and Attainable Ball Distance, it can actually record your swing locus and compare that to your previous best, or your coach's swing locus, a graphical feedback that can improve your understanding of your swing. You will need a 3BaysGSA PRO device to connect with GSA PRO if you want to capture your swing motion analysis. Golfers can instantly see on the GSA PRO app - 1. 3D animations compiled from the 10,000 data points captured per swing 2. The following 10 parameters Consistency Tempo Back Swing Time Down Swing Time Face Angle Club Head Speed Impact Force Attainable Ball Speed (ABS) Attainable Shot Distance (ASD) Swing Path 3. Comparisons of your current swings with your best swings. 4. Your historical swing performance The patented 3BaysGSA PRO is the world's lightest Golf Swing Analyzer using advanced sensor technology to capture your swing data. It provides the fastest feedback on your iOS devices (iPhone 3GS, 4G, 4GS, iPad 1, iPad 2, New iPad). Its plug and play technology makes the 3BaysGSA PRO completely unobtrusive and free from obstruction to your set up or swing, and it does not affect the weight distribution of your golf club. Testimonial: "Now with the 3BaysGSA we have entered the next generation of learning, which will enable faster improvements than ever before. I really do believe this product can and will help every golfer improve their golf whatever your level." - Robert Eastwood, British PGA Member Class AA "This is easy to use. Place the analyzer into the end of the grip; hit the ball and your student instantly sees on their phone - club head speed, tempo, impact force, etc. 10,000 data points instantly, it is just amazing and fun. It's simple. It's easy. I just think it's simply the best." - Penny Pulz, 2 time LPGA champion, Top 50 Golf Teacher