Announcement to date:
Oct. 16, 2014—-there has been a mix-up regarding the strobe. It is hidden in both color versions.
As quoted in this review in the op:
“A long press on the switch ~2secs activates a hidden strobe”. (Teardown and Mod Thread of Courui XML2 Aka "Big Head 3x18650 Side-Switch Thrower") by LinusHofmann