Spectral Range Effects on Plant Physiology:280nm ~ 315nm influence on morphological and physiological processes is minimal315 nm ~ 420nm chlorophyll absorbs less impact photoperiod effect, prevent stem elongation420 nm ~ 500nm (blue) chlorophyll and carotenoids absorbed the largest proportion, the greatest impact on photosynthesis500 nm ~ 620nm dye absorption rate is not high620nm ~ 750nm (red) chlorophyll absorption rate \"high\", has a significant influence on photosynthesis and photoperiod effect750nm ~ 1000nm absorption rate, stimulate cell elongation, impact of flowering and seed germination> 1000nm converted into calorie1)Product Specifications:Item:LED Grow lightEmitting Color: 11 Red +4 Blue (each tube)Full Spectrum: 660nm Red + 450nmBlueInput Voltage: AC85-265VLength: 29cm (each tube)Wattage: 5W / each Tube​Plug model : EU Plug and US Plug2) Product Features:Energy Electricity Saving with Higher-level Efficiency. HPS,HID,MH,Incandescent & Halogen LampFull spectrum that is necessary & critical for plants growing & flowering (from seeding to harvest)450nm Blue & 660nm Red is accelerating leaf growing660nm Red is promoting floweringPerfect for Grow Box,Grow Tent,DIY Hydroponics,Bonsai,Garden... etcComfortable, Humanistic & High-performing

---