It is an innovative portable electronic micro device that acts through electromagnetic fields on the focus of pain, reduces inflammation of muscles and joints and restores damaged cells. This safe and effective hospital technology has been evolved for personal use. This format is focused on knee injuries, which are very common in the field of sports, but also occur frequently among workers who have to spend many hours bending or performing overexertion. The use of inadequate footwear, obesity and age are other factors that affect the health of this joint. For example, the passage of time leads to wear and tear of the cartilage, the main cause of osteoarthritis. It is indicated for knee pain, runner's knee, tendinitis, knee arthritis, osteoarthritis, knee sprains and strains, inflammation and cruciate ligament injury, among other ailments.