Oh and PS, for the $5.80 something or whatever at Fasttech, even if these things worked better, this is a very poor buy compared to the Ultrafire 878 that you can get for $6.99-9.99 Review. Aura Buy UltraFire W-878 Zoomy.
The 878 has a real XML, light output is good, the beam is not blue on any that I had, it can use 26650/18650/3xAAA, it has 3 output levels instead of 2, the body is massive so if you wanted to mod, its heat sinking capacity is great! This is what I had for “handing to someone” lights previously, but one person liked it so much they ended up keeping it, and one was lost. I think I’ll spend the extra $$ next time, $3.50 was too tempting though 