Relieve types of pain :shoulder ,knee ,nerve and many more,chronic lower back ,ankle pain,muscle pain,tennis elbow pain health wellness; fusion of modern biotechnology; without piercing the skin to do acupuncture; simple operation,easy to carry; safe and effective,with no side effects; family use This is a magic therapy acupuncture points pen . It''s a tens massager that can relieve and heal the partial body pain. That''s why it also called partial pain treatment therapeutic apparatus and family doctor