At one third of an ounce, 3BaysGSA PRO is the World’s Lightest Golf Swing Analyzer, which fits perfectly to the end of golf club and uses advanced motion sensors to digitize your swing motion instantly and deliver real-time animated swing plane playback along with key swing metrics to your mobile devices via GSA PRO app. Golfers can compare each swing with their best ones or instructors’ so they can identify flaws, make adjustments and track the improvement progress. 3BaysGSA PRO is a revolutionary swing training aid that helps golfers pursue more powerful, accurate and consistent swings. The size, weight and location of 3BaysGSA PRO make it inconspicuous, free from obstruction to your set up or swing, and unlike other swing trainers it does not affect the weight distribution of your golf club. You can instantly review the swing arc animation playback along with key swing parameters including Club Head Speed, Face Angle, Tempo, Swing Path, Impact Force, Consistency on the intuitive mobile app. You can also compare each swing with your best one or coaches’ to make adjustments and achieve higher swing consistency. 3BaysGSA PRO is a perfect training partner for all golfers of any skill level. You can use it on practice ranges, golf games, during lessons with coaches, or even at home. Features: 9g in weight No need to re-adjust after every swing Visual aid for correct club head position Compatible with all golf clubs Real time monitoring your swing arc motions Compare your current swing with most consistent one Share your swing information on Facebook Review your complete swing history