Diamond Kinetics PitchTracker Baseball, made up of the Smart Baseball and the PitchTracker Baseball App, revolutionizes Baseball with a comprehensive pitch analysis and charting system available right in the palm of your hand. See in-depth information previously available only with expensive hardware systems. Regulation Spec Full Grain Leather. 5 oz 9in. White leather, Green laces. Dedicated iPhone and iPad apps. Captures motion data in real-time and sends it to the free PitchTracker Baseball iOS app via Bluetooth. Smart Baseball memory holds up to 64 pitches when mobile device not nearby. Track metrics such as Velocity. Boost the Feautures with a Subscription! Purchase a Smart Baseball and download the dedicated iOS app for a free 14-day Premium Pitcher Baseball subscription. Premium Pitcher Baseball subscriptions include access to additional PitchTracker Baseball features including: Additional 6 metrics Bullpen Setup Complete Pitch History Groups and Connections And more! PitchTracker Baseball is designed for use in pitching and the metrics important to that motion. Using it in an unintended way (i.e., collecting data in a non-pitching manner) may affect the accuracy of those metrics.