Just got one of these. First impression is that is a OK light, but nothing to write home about. What made it interesting to me is that it is an Energizer light that runs on either a 18650 or 2X CR123A's (both battery types included). What kind of 18650 comes in this Energizer light? A a blue wrappered protected button top "Great Power" 2600 mAh ICR (sorry no cool Energizer bunny wrapper).
It also came with a couple of Chinese Energizer branded CR123A's
some more about the light - aluminum construction, but doesn't seem all that heavy duty with a honey comb lens for a floody beam. 400 lumens on high, 1000 on turbo, also has 185 lumen medium, 30 lumen low and strobe modes - comes on in high with the first click, medium on the second and low on the third. You need to click through all 3 main modes to turn it off *, which I find annoying. You can get to turbo by pressing and holding and to strobe with a quick double click. There is a USB charger built into the light and a charging cable is provided. A head strap and a cheap plastic mounting bracket are provided for use as a head lamp as is a metal pocket clip for use as a angle head flashlight when detached from the head strap mount.
* EDIT - The light does turn off with the next click if you wait about 6 seconds, so this is not relly a problem in normal use.