Also, If you buy an E2E and a KL4 seperately, you will have "Executive Elite" engraved on your body of the light. If you just buy the L4, then you have "L4 Digital Lumamax" engraved on your light. The same goes for the L5 and L6. They are basically on C and M series bodies that are re-engraved to "L5" or "L6 digital lumamax"