The Feit Electric 30-watt PAR38 adjustable spectrum LED grow light bulb features three light spectrum options and produces considerably less heat that retains moisture in plants while preventing lamp burn. Preset the preferred light spectrum using the switch on the bulb or use an existing standard wall switch to toggle between the three available spectrum options. Get started with a blue spectrum that takes plants from seeds to seedlings, get growing with a full spectrum for vegetative growth, and get blooming with a red spectrum to nourish plants to a flowering and fruiting stage. It contains three light intensities of 43 PAR/PPF at the blue spectrum, 41 PAR/PPF at the full spectrum, and 39 PAR/PPF at the red spectrum. The PAR38ADJGRW/LED/HDRP bulb emits 2200 lumens, and the estimated energy cost is only $3.61 per year. With an average life span of up to 25,000/22.8 years, this bulb lasts longer than traditional grow lights, saving you replacement costs and time. This LED grow light bulb has a 40° beam angle making it perfect for use in table lamps, pendants, or other open fixtures with medium E26 sockets. It is rated for high humidity use making it compatible with most hydroponic systems. This versatile grow light is also ideal for indoor gardening, organic growing, and hanging over plants. It is UL/CUL listed and FCC complaint. Get access to pesticide-free fruits and vegetables any time of the year right at home with the Feit Electric adjustable PAR38 LED grow light.