*Do not continuously stimulate one location for more than a few times. *The Piezo Stimulator generates a single electric impulse by compressing and releasing pressure on a piezo crystal inside the stimulator. A single pulse, approximately 10 micro-seconds, with a peak voltage up to 10,000 volts is generated with each activation. The piezo crystal has a life of 5,000 - 10,000 pulses, depending on the condition of use. *To use the Piezo Stimulator properly, always provide a grounding path by holding the patient's hand or arm firmly or by having the patient touch part of the stimulator. *Activating the stimulator without grounding the body will shorten the lifetime of the stimulator. *Made in Japan * 60 Day Warranty