For all of the tech-details, http://www.candlepowerforums.com/vb...s-D10-amp-EX10-Reviews-BEAMSHOTS-RUNTIMES-etc This is the Golden Dragon version, which I believe has a max of 145 lumens and a low of 5. The light has a "ramping" feature, which allows you to vary the light anywhere in between the high and low with a couple of taps of the thumb button. The light can be used either click on/off or in a momentary on/off. Very unique light, $45 shipped in the US, PP Gift please. No box or papers. [/URL] [/URL] [/URL]