 Do you buy a machine and add frequency or are they individually sent out? So how it works is, let's say, here's the Chico Mini system. So it comes with the transducer, two Chico Minis in this case, all the connections you need, and then it comes with a tablet. So all the frequencies are in the tablet. You got over 10,000 frequencies in here. The tablet will connect wirelessly or wired to the transducer. The transducer is connecting to the coils and the coils will emit the electromagnetic energy, which is completely silent. But you have these little magnets that will show you that the energy is emitting from the coils. And we also throw in another magnet that you can hold and you can feel it vibrating in your hand so you can feel the energy.