?Efficient Red & Blue Blubs Combination? 39 red LEDs combined with 21 blue ones provide the most common spectrum of light to fuel indoor plants growth. Blue LED spectrum can help plant to germinate. Red LED spectrum promote plants germination, flowering, results. The combination of red and blue spectra can accelerate plant growth and increase yield. ?Intelligent Timer Function? Buteny plant light offer the circular memory timer function with 3 options-3h/6h/12h. When keeping power, it can automatically turn on and off every day according your settings, no more manual operation for you. ?3 Switch Options & 6 Dimmable Modes? The three-head grow lights has 3 switch modes and 6 dimmable options which is suit varied stages of plant growth. You can adjust the brightness of the light and the distance between the light and plants, according to plant needs. ?Flexible Goose neck & Sturdy Clamp? The 360 degree goose-neck with clip can easily adjust the distance and angle to enlarge the illumination area and provided more efficient lighting to more plants. ?24 Hours Online? Your satisfaction is our main priority. If you are not satisfy with our product, simply contact us directly, we will offer a satisfactory solution to you. You can contact our 24 hours available customer service through clicking "Sold by" on the product detail page or your Amazon order page and you will be directed to "Ask a question" to send us message.