The efficient 600-Watt Sunleaves OptiLUME High Pressure Sodium Lamp emulates natural sunlight and promotes bud set, flower formation, and fruit and vegetable production as it distributes light energy concentrated in the red-orange portion of the spectrum. Universal design allows horizontal and base up operation while the 24,000-hour life rating and one-year warranty assures dependable performance. This high-output OptiLUME lamp emits 90,000 initial lumens and works with most 600-watt high pressure sodium HID systems