LC-1 types All laser pencils’ light can be continuous or modulated. The batteries last for severel month in case of average use. LC-1 pencils are practical when mobility important and the treated area is not too big. Main fields of application: Laser acupuncture, dermatology, rheumatology, diseases of the nervous system, the treatments of ears, nose, throat and cosmetics. The LC-1 pencils can be used in a variety of medical and cosmetic fields with different accessories, wich can be bought separately.