What Is It? It's painless acupuncture stimulation that activates tissues, firms sagging and ageing skin, promotes blood circulation, detoxes the meridians, and helps reduce muscle pain. 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 9 - strongest). Simply press the start button to increase or decrease the strength of the electric pulse. How It Works? There are No needles involved 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. Functions: It has no side effect as opposed to using painkillers and other medications to treat chronic pain. It's great for treating acute and chronic physical pain, arthritis, rheumatism, osteoporosis, sciatica, migraine, sports injuries, and muscle, joint and back pains. What's in the box 1x Meridian Pen