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How does the light work? 6 red LEDs : 6pcs with wavelength 620-630nm, rich sources in red light are more efficient and beneficial for photosynthesis, best for flowering and seed production. 4 blue LEDs :4pcs with wavelength of 460nm, blue light is more necessary for Chlorophyll and Carotenoid, good for the photosynthesis, best for promoting the stem and leaf. Tips: 1.Would be better to keep the distance between the light and plant in 20-30cm. 2.Generally this grow light should be turned on for 5-8 hours every day. 3.Remember to keep enough water for the plants when you use the grow light. Specification: LED quantity: 10pcs LED color: red (620-630nm 6pcs) ; blue(460nm 4pcs) Power: 20W Input voltage: AC 100-240V Body material: Aluminum (heat dissipation) Net weight: 0.5kg