PowerStation24 High Efficiency Green Energy Full Spectrum SMD LED Plant Grow Light Bulb (Standard E26/E27 base) This grow light bulb is specifically designed, of full spectrum and intensity, for indoor gardening and hydroponics. Works with any plant and adjusts for all grow stages. It provides the optimal amount and type of light needed for robust plant growth. For optimal growth indoor, place the light 2" to 4" from the plant, and provide at least 10-12 hours of light per day. The light bulb fits into any regular light fixtures such as table lamps, wall sconces and track lights. The full spectrum light will be really helpful in the greenhouse on those low light days or in the winter. Design for horticultural use, however they work equally well in the office, warehouse, classroom, anywhere healthy full spectrum lighting is required. It provides natural color comparable to sunlight, increasing visual activity and reducing eye fatigue. Low energy consumption of 10 Watts, you will have great savings on your electricity expense. Package contains 1 Grow Light Bulb (E26 base).