Planet Light Pro 400-Watt Super HPS Grow Light for Horticulture Indoor Gardening and Hydroponics (E39, Full Spectrum, 51000 Lumen, 24000 Hour Lifespan) 400 Watt of High Pressure Sodium (HPS) for Indoor Horticulture Gardening 51,000 initial lumens; 2,100 color temp; 24 CRI Covers up to 4 to 5 square foot area,Places 12 to 24 inches above the plants Socket: E39 base, Compatible with any Electronic Ballasts 1 year warranty with 24000 hour lifespan