The biobulb is a full spectrum daylight bulb that uses 75 less energy than a standard light bulb the biobulb produces up to 1750 lumens compared to the standard 60w bulb that only manages 600 lumens the biobulb closely replicates sunlight which may improve mood nighttime sleep and daytime energyr r anyone prone to seasonal affective disorder sad or who simply longs for summer may find that its flicker free white light helps to restore their natural equilibrium they are ideal for reading