The silver pulser produces EIS Silver solutions and Cleanses the blood of pathogens. It uses a biphasic 4 Hzs square wave through special electrodes designed to penetrate into the arteries. It will go up to about 30 volts.
The Clark Zapper uses a positive offset square wave to kill pathogens throughout the body.
In my case the Beck equipment worked much better. Plus you have it hooked up to only one arm so you can do other tasks while it is running.