This light head is a direct replacement for the Surefire M600DF head. It can be used with the Modlite 18650 body or the smaller Modlite 18350 body. While lumen output is only 680 lumen the throw is about 400% greater than the M600DF. This light head is best suited for situations where extreme throw is needed.
If you are on the fence about which light head to purchase we recommend the PLH light head which is available here.
Lithium CR123 cells are not supported and if used will cause the cells to heat up and possibly explode or catch fire. We recommend the KeepPower 18650/18350 high drain cells which can be found here. Runtime is about 80 minutes with 18650 and about 35 minutes with the smaller 18350 cells.
Do not stack 18350 cells into an 18650 body this can cause the light to malfunction. Only use 18650 cells in 18650 bodies and 18350 cells in 18350 bodies.
If you have question about batteries please check out our FAQ section about batteries here.