Take a look here. This is the thread that kind of got me wondering about the Fusion 36 showerhead. According to the info on this thread, the Fusion 36 delivers 311 lumens on three cells and 430 lumens on six cells. Updated numbers bring these figures down to 251 and 347 lumens! These numbers are fairly respectable, especially considering the price. But they certainly fall short of the advertised minimum of 400 lumens on two cells and 900 lumens on six cells.