Baseball is a lot of fun to learn but takes practice to master. You need to work on your pitching and hitting technique all the time. TheStack Baseball Swing Speed Trainer that combines with your phone to track your speed, distance potential, grit score and other metrics. The Stack sensor lasts up to 1 year on battery. The app provides you with responsive speed training to improve your game. You get a guided workout timer for reps, sets, and rest.
The Stack sensor measures your bat speed accurately. It goes to sleep when not in use but comes to life when you move your bat. This kit is available for kids and adults.
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