Cover an area of approximately 4ft x 4ft to 5ft x 5ft Dimming functionality for precise control over lighting conditions Photo synthetically active radiation (PAR/PPF value): 1620 mol/s Sturdy and heat-resistant casing for long-lasting performance Replaces 1500-Watt HPS bulbs Adjustable hanging hardware for flexible positioning and angle customization Maintenance-free for more than 50,000-hours of operation Ideal for indoor horticulture enthusiasts and professional growers UL Listed Usage: plant grow light, hydroponic grow light, horticulture light Selectable switches to allow the use of different color light spectrums for the different stages of plant growth 5-year worry-free warranty Emits spectrum wavelengths and color for superior photosynthetic response