Feit Electric's Adjustable Spectrum Flexible 4-Head LED Grow Light uses only 40 watts of electricity and comes fully assembled with an ultra-lightweight design and built-in clamp for tabletop lighting. Save time, space, and money with Feit Electrics LED growing ecosystem. Four flexible heads direct light exactly where you need it. This no-humming LED emits adjustable and precise wavelengths for superior photosynthetic response. Switch color spectrums to match the plant's growth stage and increase overall yield, from a blue or white spectrum for leaf and vegetative growth to a red spectrum for flowering and budding or a Red/White/Blue combination for a good general setting for all plants. Grow herbs, lettuce, tomatoes, peppers, flowers, and more with added timer functionality to make sure your plants get the perfect amount of light each day. Use the 3200-lumen GLP29/B/ADJS/40W/LED grow light on tables, desks, bookcases, and shelves. There are no lamps to dispose of or replace and its cool operation prevents leaf burn. Our grow lights last up to 25,000 hours/22.8 years, cutting down the costs and time spent replacing incandescent and fluorescent lamps. The estimated annual energy cost is only $4.82/year.