It incorporates the whole light spectrum including small amounts of UV-B which has been proven to promote higher resin levels within the plant and it is not featured in traditional HPS lamps. It is more akin to the spectrum of the sun than normal HPS lamps. This ample spectrum significantly increases the quality and yield of your crops. The lamps are extremely efficient and can last up to 30,000 hours before significant loss to lumens occur. This means you can get more cycles out of these lamps before you must replace them compared to the traditional HPS lighting systems.