Intelligent, Hi-power light 35-150W, with life over 20,000 hours The life of electronic ballast reached to 40,000 hours Intelligent-Light ... product Feature:Hi-power light 35-150W, with life over 20,000 hoursThe ... with life more than 40,000 hoursLife for lighting source: Light decay less than 10%, life over than 3 yearsLuminous efficiency ...