Received a "Queen" model the other day. Have not "tested" it per se but really don't like the fact that the entire battery tube turns spinning the positive nipple of the batteries on the face plate of the head. The gold-colored anno(?) on the "faceplate"--area a the back of the head assembly that conbtacts the batteries (3 X 123)--was already worn off when I received the light indicating to me that this light had been used before or that the anno (or whatever material it may be) is poorly done. Whateve the case may be, this represents a design flaw IMHO since multiple battery changes will certainly exacerbate the problem with this wear. A better approach would have been to incorporate a tail which could be removed and which would have eliminated this problem. It would have cost a few more $ but, would have been worth it. At this price point however, I still like the light.
Karl