1This product is suitable for part of the body pain and can quickly relieve the pain. 2The operation is simple, easy to carry, safe and effective, no side effects, suitable for family use. 3The probe part of the acupuncture pen is based on the principle of singlephase electricity, which must be looped by the body's own static electricity. 4If you ask someone to give you acupuncture, he needs to put his hand on your skin and the acupuncture pen will work. If he does not put his hand on your skin, the meridian pen is still working, but you do not feel anything. 5Made of quality material, durable and sturdy, having long service time.