About this item AUTO ON/OFF & TIMING FUNCTION--The Grow Light with an automatic timing function and a USB plug (comes with AC adapter).The circular-memory timing function works automatically. 3/9/12H timer setting options according to plant different stage,which requires no manual operation and takes good care of your plants when you are on work or a vacation. GROWING EFFECT-- Plant light has 20 LEDs (13 red and 7 blue), which give off targeted spectrums range from 450nm to 660nm.The red light Increases the accumulation of chlorophyll and promotes stem elongation. The blue light promotes chlorophyll synthesis and promotes green leaves growth. Blue & Red Light solves the problems of small roots and yellow leaves. 360 DEGREE ADJUSTABLE GOOSE NECKS--Grow light with 360-degree flexible neck and clamp allow you to adjust angle and distance between the lamp and plants which provide more efficient illumination light for more plants at the same time. This considerate design of our plant light ensures a large lighting coverage to satisfy growth needs of houseplants. 9 DIMMABLE MODES & 3 SWITCH MODES--The grow light provides 9 dimmable modes and 3 spectrum modes to suit varied stages of plant growth.The grow light has 9 levels of light intensity and has 3 spectral modes (red, blue, and mixed light) to meet different stages of plant-growing needs. You can turn on/off each arm individually and change the grow light intensity, depending on the growth stage. ECO-FRIENDLY & EASY To USE--Mercury-free,no UV or IR. No harm to the environment and your family. The LED growing light has a USB connector which makes it convenient to connect.The 4 operation button make the growing light work easily.