ABI 12W Broad Spectrum LED Grow Light Bulb for Growing and Flowering Indoor Plants Optimal spectrum, high efficiency, quality components, and sturdy construction make the ABI broad spectrum grow light the best choice for indoor growing needs. Suitable for all types of indoor plants. Can be used for both vegetative growth and flowering. 50,000+ hour service life, 3-year manufacturer's warranty, assembled in the USA 15 bright high efficiency LED chips use only 12W of energy and emit minimal heat. Fits a standard household E26 socket. 100-240V AC input. Phosphor based LEDs produce broad spectrum 400-840nm light that is optimized for photosynthesis. The spectral power distribution is tuned for chlorophyll while also providing suitable wavelengths for accessory pigments and photoreceptors.