That's a 1x AAA light right? That model is called the Solitaire. The classic mini maglite used two AA's and there was also one with two AAA's.
The Solitaire is interesting because at 12mm it is the thinnest AAA light out there. Others are usually 14mm or more. I was just thinking about the Solitaire recently and wondering what prevents other manufacturers from making lights that thin.
Long ago there was an incandescent version of the Solitaire. I had one and it was awful. But, the modern LED versions should be much better. I might look for one so sometime.