TheStack Bat - Includes integrated Speed Sensor and Award Winning App

TheStack Hardware 5 milled Stack weights enable 30 weight combinations between 0g and 400g Dual-purpose weight case / phone stand Highly engineered training bat - Pro or Youth version Integrated Stack Sensor measures bat speed Seamlessly send speed data to TheStack App while training Sensor goes to sleep when not in use No charging required, battery life > 1 year TheStack Baseball App Training Customized and responsive speed training formulated by renowned biomechanist Dr. Sasho MacKenzie Training Made Fun and Easy Enjoy rewards when you set Personal Records Guided workout timer for reps, sets, and rest intervals Custom Bat Speed and Distance Potential metrics to track your gains  Connect to Coaches and other Players in TheStack App Full access included with purchase - No additional cost for subscription fees  Share hardware amongst your family Access TheStack Baseball App from the App Store when your order arrives. Requires iOS 15.0 or later.*TheStack Baseball Bat