The tri beam head lamp is a perfect fit right from the box, it is so bright I use it when I ride my bike at night after work seems as if cars are annoyed by how bright it is, I feel safer riding at night, holds a charge very well and it's so comfortable I forget it's on, all my friends comment on the brightness and ask where did you get that head lamp and I'm quick to tell them about lone survivalist and also tell them about p90 nova lights and knives I've purchased as well, thanks for the quali...