This minimalist flashlight, the Xeno Cube, is machined from a cylinder of stainless steel. It is 4 inches long and weighs a hefty 6 ounces. It features a micro-textured aluminium reflector and a toughened mineral-glass lens.
Xeno Cube incorporates a CREE XP-G R5 LED, and it gets excellent performance from a single AA battery. On its brightest setting it shines with 400 lumens (when using a 14500 series battery).
Using a rechargeable Ni-MH battery the levels are: Ultra-Low (10 lumens / 20 hours), Low (40 lumens / 4 hours), and High (140 lumens / 1 hour). If you use a lithium-ion battery the levels are: Ultra-Low (50 lumens / 5 hours) , Low (110 lumens / 2 hours), High (220 lumens / 1 hour) .
I’ve seen enthusiastic reports on this flashlight from the Candlepower Forums, but it is difficult to find. The place we’ve found it for sale in the U.S. is on eBay for about $90.
There is also a titanium version, which is said to be out there somewhere: