Spheroidal: Partial therapy, which is applicable for quickly alleviating pain It combines modern biotechnology and the essence of Chinese medicine to show you real effects of meridian acupuncture therapy. There are no needles involve so it is not only painless but the skin is never even punctured at all, making it safe to use at home With our acupuncture machine, you will get benefits of acupuncture therapy in comfort of your house with no needles and no pain. It is applicable for pains in cervical vertebrae, shoulders, waist, feet, etc. Also serves as an aid to therapy for various diseases such as frozen shoulder, arthritis and neuromuscular pain, etc. This pain relief pen has 9 adjustable intensity levels to satisfy your needs, simple to operate, and easy to carry. With frequent use of this massager you will be able to reduce pain, boost your mood, improve your skin condition, promotes blood circulation of your skin to give you the rejuvenated, radiant and youthful look. It only needs one AAA 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.