One big drawback - Nitecore MH10 LED 1000 Lumen Rechargeable USB Flashlight

This flashlight has a great choice of power levels. The strobe is blinding (as it should be). The battery voltage level (to the tenth of a volt) feature is very handy. Being able to use non-rechargeable batteries in a pinch is a good idea. The one drawback: the rubber cover for the USB port is directly opposite the on/off switch on the barrel of the flashlight and that makes it hard to find the switch in the dark. There is a fifty-fifty chance that you will push in the wrong spot of rubber when you try to turn it on. The on/off switch needs to be VERY obvious to the touch.