Its a painless acupuncture stimulation that activates tissues, firms sagging and aging skin, promotes blood circulation, detoxes the meridians, and helps reduce muscle painNeedleless acupuncture. There are no needles involve so there is no skin piercing. Simply press the pen onto affected areas and it will release an electric pulse to stimulate the meridian and acupuncture points in your body for healing and pain relief.Alternative treatment. It has no side effect as opposed to using painkillers and other medications to treat chronic pain. Its great for treating acute and chronic physical pain, arthritis, rheumatism, osteoporosis, sciatica, migraine, sports injuries, and muscle, joint and back pains.Easy to use. It only needs one AA battery (not included) to function. It has a digital display that shows the strength of the electrical pulse output (0 - weakest and 6 - strongest). Simply press the start button to increase or decrease the strength of the electric pulse.Have three special functions. Dome type is superficial therapy applicable for health care and facial beautification, Node type is node therapy applicable for partial body pains, and Spheroidal is partial therapy applicable for quickly alleviating pain.Portable pain reliever. Its lightweight so you can easily put it in your pocket, bag, or pouch if youre traveling or perhaps just going to work for a long day and need relief from your pain.RELIEVE TYPES OF PAINSShoulder painKnee painNerve painChronic lower back painAnkle painMuscle pain* If you have a pacemaker, use of this product is not recommended*