Piezo-DX Quartz Crystal Stimulator is a piezo needleless acupuncture device. When press against the skin (around a painful muscle or area of the body), the devices generate a low electronic pulse brought on by the spark of a quartz crystal, creating a piezo electrical charge. The flow from the massager is about 6 millionths of an ampere at 18,000 volts for 12 millionths of a second. The treatment can be given through a layer of clothing, but the stimulation is less strong. Applying the piezo device directly to the skin is better. Its purpose is to normalize the acupuncture meridians.
 
Based on Chinese Acupuncture Theory, the meridians being "out of balance" can "cause" physical difficulties with particular organs of the bodies associated with specific meridian lines which flow through the body. If the meridian energy flow is sluggish , the Piezo will be a catalyst to speed it up, and if the energy flow in the meridian is too hyper, the Piezo can slow it down. Basically it normalizes the flow of 'energy' /’qi’ within the meridians in the body.

 The device works with a quartz crystal, much in the same way that a watch works. It needs no batteries, nor electricity. The unit should last 3 years, although it may last up to 10 years. Always clicking on a body part will let the unit last longer. Instead, clicking it into thin air will help dissipate the energy, and it will not last as long. Makers of the device claim it can relieve headache, low back pain, lost voice, shoulder pain, arm pain, knee and ankle pain, stiff shoulders, tiredness, sleeping problems, muscle aches, neuralgia, stress, insomnia, joint-pain or tennis elbow, as well as any other conditions of disease of the body. It is most effective for disorders of joints such as the knee, elbow or ankle. The effect of piezo devices includes to facilitate the circulation of the blood, to power up antiphlogistic as it increases the number of blood corpuscle, to resist inflammation - antiphogistic, to increase life power along with activated adrenal, to adjust an autonomic nerve system , and to encourage the recovery spontaneously from illness.