The SB-100P is the old MB-100 with a few changes. This high-intensity blacklight lamp is one of the most powerful UV lamp. This lamp puts out a steady 4,800 uW/cm2 at 15" with a spot bulb, or 1,200 uW/cm2 with the flood bulb. We prefer the flood bulb due to its more broad and even light distribution. With this power comes two drawbacks. First, the SB-100P uses a transformer that weighs 12 pounds. Second, because it uses a transformer, the lamp takes 5-10 minutes to get up to full power. The lamp comes complete with 8 feet of power cord (wall to transformer), and another 8 feet of power cord from transformer to lamp (total of 16' reach). and 8 feet from transformer to outlet plug. Both this unit and the SB-100PX (listed below) comes with UV Safety Glasses. The SB-100PX is the same unit as above only the length of the power cord from the transformer to the lamp is 20', giving a total reach of 28'.