BMOUO 12W PAR38 LED Grow Lights, Regular E27 Sized Socket, 30&deg; Beam Angle, Plant Lights, Red + Blue for Hydroponic Plants, Flowers, Vegetables, Garden, Greenhouse Lighting , Grow Light Bulbs Helps accelerate the growth of indoor plants. Emits the wavelength of light which can be fully absorbed by the plants photosynthesis, best for blooming and promoting the leaf. Easy to set up and use. Standard PAR38 shape with E27 base. No special lamp needed, a desk lamp will do. Low heat. Designed with the finned heat-sink, it does not generate any noticeable heat even 17hrs a day, so it won't hurt your plant. Led grow light have 12 LEDs (3 blue & 9 red), ultra bright. Really helps when the plant need extra boost of light, or a few of sun, raining, snowing , dark indoor etc. These growing lamps emit the wavelength of light which can be fully absorbed by the plants photosynthesis; no energy waste like fluorescent lights etc. 660 and 430nm; 630 and 460nm are respectively 4 peaks of growth spectrum for maximum chlorophyII A and B production. Sources rich in red light are more efficient and beneficial for photosynthesis, best for blooming and fruit .The Chlorophyll and Carotenoid need blue much, good for the photosynthesis, best for promoting the leaf.