I was asked to do an overview of my recently purchased Ti Mule McGizmo with the 1xAA converter and battery pack. I'll start with a quote from Don (McGizmo creator) with some of the specifics on the LE or light engine. I borrowed this quote from CPF and edited out the pictures and links. So, with all of the technical jargon out of the way, let's get some photos of my light. The pocket clip is the strongest clip I have used to date. My light has never come out of my pocket without my consent. Side view, showing the nice detail on the battery pack. The ribs of the battery pack feel good in hand, no sharp edges. The business end. Notice there is no reflector present. The beam is an ultra flood. The light uses a forward McClicky to advance through the three levels of light. You can cycle through the levels with a half press on the button, then full press on the level you want to keep it on. Here are a couple of views of the disassembled light showing the head and body sections in relation to the installed battery. Also, here is what the LE, or light engine, looks like. It just screws right into the head. I have the Nichia 119 LE. Beam pattern shot, taken with my phone camera, while at work (not the best, but it works to show the pattern). The light was just over 1 meter, 42" to be exact, from the wall. I had to stand nearly 20 ft from the opposite wall to get the entire beam pattern in the frame. Fortunately, we have a long conference room at work. You can see in the picture just how wide the beam is compared to how close it is to the wall. When I use the light, I don't have to move it from side to side to look around, I just keep it pointed forward.