 that allows you to take a basic glow-in-the-dark golf ball and throw it inside of the machine, and it supercharges it in 90 seconds and then holds it at that state until it dispenses the ball or you take it out of the unit to be able to do your driving range or your physical golfing in general. But it holds it for a charge of anywhere between 10 and 14 hours of charge is what these machines can overdose them at.