“This light is a busget saving version of the FC 6500 which was also an amazing light. They used cheaper diodes but put more of them and run them at a lower voltage so they are even more efficient and will last even longer than the FC 6500 which I love as well. It is recommended for a 5 x 5 but I run mine at 70% in a 4x4 and have par 750 ish everywehere”