... Temperature -20°---+60 °LED Lamp Life 20,000 hoursRelevant Certificate CE, RoHS,Warranty 18 monthsOptical Data :Light Color Warm White, Neutral ... -450lmCRI Warm white: 80,Neutral/Cool White: 70Mechanical Data Light Type High Power LED lampDiameter 60mm Base Type E27/E26 ... lighting, office work station 3. Back lighting, step lighting, light boxes 4. Merchandising, exhibition stands, and panels