Efficient red/blue LED combination: This LED lamp has grow lights made up of 60 efficient growing LED (39 red and 21 blue). It meets the conditions of plant growth without sunlight. The red light promotes photosynthesis, germination, bloom and fruit bearing. The blue light ensures the plants take in more energy through chlorophyll synthesis to help in germination. This professional grow lamp stimulates plant growth by multi-directional illumination.Timer Wgthhk Grow Lights comes with three timer setting options which allows up to 3, 9, or 12 hours according to plant needs. This is a one-way timer whereby lights can automatically turn on and off everyday. The circular-memory timer function works automatically.10 Dimming model & 3 Switch model : Wgthhks grow lamps has 10 dimmable modes and 3 spectral modes (red, blue, and mixed light) to suit varied stages of plant growth. You can just switch the lights off or on to suit the plants need.Adjustable Design : Powered by USB or AC Power Plug(USB power adapter included ) which makes it convenient to connect to your office or home. With its 360 degrees adjustable gooseneck, it is able to light a wider area and emit light in any direction to provide energy to more plants.Widely Used: suitable for indoor plant seedlings grown in a hydroponic greenhouse at your home or you placed in your office. It helps to speed up the growth of potted plants, flowering plants, foliage, and succulent plants. Grow Lights 10 Dimmable Levels Plant Grow Lights with 3 Modes Timing Function for Indoor Plants