Meridian energy massager Pain therapy, fast Effective Drug-Free Pain Relief Effective Pain Relief: Shoulder, back, elbow, knee, ankle, nerves, muscle pain, tennis elbow and many more Acute and chronic physical pain Indication: It is applicable for pains in cervical vertebrae, shoulders, waist, feet, etc. It also serves as an aid to therapy for various diseases such as frozen shoulder, arthritis and neuromuscular pain, etc Node type: Node therapy, which is applicable for partial body pains Spheroidal: Partial therapy, which is applicable for quickly alleviating pain This is an electronic acupuncture pain therapy pen. This acupuncture pen provides needleless clean and painless acupuncture stimulation for safe in-home pain therapy Note: The probe part of the meridian Pen is single-phase Electric, must rely on the body itself static electricity, making it form a circuit, then can work normally. This is why the shell of the meridian Pen is designed to be metal material. If you treat others, you have to put your hands on him, to form a cycle, so that the meridian Pen normal work.