Features: Red light promotes rhizome growth, blossoming & bearing fruit, extending flowering phase & increasing output. Blue light contributes to plant photosynthesis, promoting growth, protein synthesis & fruit development No harmful elements, environmental friendly. Outer shell with great heat dissipation, extending service life. Designed to fit standard E27 fittings, easy to install. Ideal for cultivation house, greenhouse, garden, indoor flowers growth, hydroponic growth plant, etc.