Design Flaws abound!
"Although the 1300 lumens cast plenty of light, batteries are almost impossible to install without cross threading the cap. That's because the threads are too fine, and too much pressure is exerted against the cap by the batteries. As bad, the sleek aluminum surface makes holding the flashlight a bit like holding an ice cube. It's destined to be dropped which will most assuredly mar the nice aluminum exterior. Strike 3 is the ease with which the flashlight will roll off any flat surface, since it is perfectly rounded. The designers were sleeping when they produced this turkey. Back it goes. . . ."
