440 watts, 54000 lumens, within a few inches of the top of the plants. Uhhh... did you look at the picture, they look like they are in veg to ya? I will be purchasing one for vegging after I get two more for flowering. This first run won't be a good comparison run because these aare from clones I took from flowering plants. Long process, created more than one cola on every plant, which will probably have a negative impact on yield. VV