Absolute Daylight red/blue spectrum LED grow light bulb. Features a white light appearance that is perfect for plant photosynthesis. The unique mixture of red and blue light, and full spectrum daylight is tuned to the wavelengths of light plants most efficiently absorb. Great for fruiting, flowering, and more. With virtually no heat signature, it replaces hot 100-watt floodlight bulbs, and can save you up to $88 per year on electricity per bulb. A19 shape with standard E26 (medium) household base.