Color rendering index of 92% (Natural Sunlight is 100%). Colors are enhanced and improves visual acuity. People work and feel better with a fluorescent light like Spiralite Starlites. Promotes positive effects on health. Boosts physical fitness. Rated at 36,000 user hours. Lasts five times the life of a Conventional fluorescent lamp. Kelvin Temperature 5765 degrees. Used in schools, offices, factories, showrooms, dental offices and labs, etc. Colors are enhanced, people work and see better. Offers pleasing light conductive for work or studying.