Proton Control pairs wirelessly with your Proton to enable remote control and programing of your ball machine. Inside the phone app you can access built-in training routines and easily create your own custom shot sequences. The Apple Watch app allows control and execution of saved shot sequences without your phone. The Watch app uses HealthKit to start a workout and maintain the connection while the watch screen is off. A Proton ball machine from Hydrogen Sports is required for use.