Wavelength: 190nm-2000nm Optical density: OD2+ - OD 5+. Visible light transmittance: 35% Safety glasses for violet, blue, green and infrared laser exposure, especially for medical beauty care. EN207: 1998 + A1: 2002 approved (European laser eyewear standards for laser safety eyewear). Delicate and cool appearance. Comfortable to wear. Absorption type full protection for your eyes.