You can see on Selfbuilt's test of the XM-L2 version of the SC5 (https://www.candlepowerforums.com/v...L2)-Review-RUNTIMES-BEAMSHOTS-VIDEO-and-more!), that his results are consistent with specs from Zebralight website. Consider the new version MKII XP-L2 is more efficient, just take a look at the specs and compare with Malkoff's specs, which I believe are also true due to his reputation.