Led Grow Light Bulb,Derlights 40W Equivalent E26 Full Spectrum Led Grow Light Bulb, SMD2835 Grow Plant Light for Indoor Garden Greenhouse and Hydropoics Greenhouse Organic,Pack of 4 Faster and Healthier Growing--- Derlights Full Spectrum Grow Light perfectly imitates sunlight, help the plants grow faster (2 weeks make a difference) and better in a healthy way. Good for plants from seeding stage. Easy to Install--- Fits standard E26 socket, just screw into your desk lamp, no special lamp-base necessary. Recommended coverage area up to 2.8 square feet mounted 5-18 above the plants, lighting time up to 10hrs-12hrs, depends on different plants. Full Spectrum--- Compared with other grow lights, Derlights each led chip mixes all wavelengths. All wavelengths of light can be fully absorbed by plant photosynthesis without any waste like fluorescent. 40pcs High-efficiency 2835SMD LED chip, Blue-Ray (400-499nm) is good for taller and healthy leaf. Red-Ray (600-699nm) is good for blooming and fruits. Great Heat Dissipation and Long Life--- Compared with other grow lights, cPlant bulbs made of metal aluminum radiator shell, LED chips are placed directly onto the ceramic heat sink, both are designed to control noticeable heat, keep your plants from hurt. lifespan up to 50,000 hours. What You Get--- 1-year unlimited warranty; 30 days no question asked return policy; High quality product with AC 85V~265V; 24/7 friendly customer support.