The 315-watt, 4,200-kelvin CE certified OptiLUME Enhanced CMH lamp is suitable for a wide variety of plants in all life stages. With a high CRI of 95, this ceramic metal halide lamp more closely mimics natural daylight than other types of grow lamps, making it ideal for promoting plant growth. The beneficial UV and infrared output also works to promote stronger plants and higher quality yields. This lamp is rated for 12,000 life hours.