HOW DOES THE PLANT GROW LIGHTS WORK Sunlight White (Full spectrum) Daylight White increase light intensity and enhance photosynthesis, it is similar to the natural sunlight and ideal for all sorts of indoor plants at all growth stages. Red light is 675 nanometers that is the peak wavelength for photosynthesis and photoperiodism. Red light is best for blooming and fruits. Dear customer, thanks for your browsing, this A+ page is the 4-heads plant lights, you can also buy 1, 2, 5-heads plant lights by clicking the main picture. 360° FLEXIBLE GOOSENECK 360-degree flexability gooseneck between the clip and the led grow lights which you can move the light to the multi-directional you need. Cycle Memory Time Function You needn’t worrying about forgetting to turn on the light when you are busy at work or on vacation. This indoor plant lights is designed with auto circular memory timing function and there are 4/8/12H timer setting options for your choosing. The grow light will last for 4 hours and turn off automatically. High Efficiency LED Chips Ensures plants take in more energy through the synthesis of chlorophyll to help in Grow. Easy to Assemble Loosen the screw counterclockwise , press the triangular frame down to the bottom, if the height is enough, can tighten the screw clockwise. If you need to be higher, can refer to steps 3 and 4 to unscrew the screw and pull out the rod inside, and tighten the screw, and finally , place the light head on top of the rod and twist counterclockwise until the grow lamp head is secured. Read more Read more