Full spectrum Ultra Grow LED grow light bulb. Features daylight white light appearance and replaces up to 150-watt grow flood bulbs for indoor gardening and commercial hydroponic plant growth. This full spectrum LED bulb emulates the sun and encourages healthy plant growth. With virtually no heat signature, it replaces hot floodlight bulbs up to 150 watts, and can save you up to $133 per year on electricity per bulb. A19 shape with standard E26 (medium) household base. Ideal for indoor gardening of houseplants, seeds, and greens.