The 3Bay Zone is the ultimate swing analyzer. All you have to do is stick the GSA into the club of your choices and turn on the GSA app. Features:- Shows angle of shaft when you strike the ball - Illustrates the difference between your release point and optimal point - Syncs with Iphones, Androids, and Ipads - Sophisticated design - Includes enhancements to old features and new features - Suitable for beginners and pros to improve their game - Real time monitoring your swing arc motions - Allows you to monitor your the swing power release point - 3D views to show swing - Indicates/ alerts when you have over-swung - No adjustment after every swing.