SunMaster Cool Deluxe Grow Lamps emit light from 5000° to 6500° Kelvin, imitating the natural look of daylight. They are an ideal light source for the seedling and vegetative stages of plant growth, while still emitting a wide spectral distribution. SunMaster Cool Deluxe Lamps surpass many other HID sources in PAR (Photosynthetically Active Radiation) Watts - the most objective measurement of total light energy available for photosynthesis. 80,000 lumens.