Feit Electric 600-watt T3 Halogen Light Bulbs are a reliable replacement for work lights, outdoor security lights, and more. They output an incredibly bright 12,000 lumens of 2800K Bright White light with a high color rendition (CRI) of 99 for more vibrant and true-to-life color. This bulb is fully dimmable and is rated for an average life span of 2,000 hours or 1.8 years.