This evening, I had dinner with some colleagues and had an occasion to use my flashlight. This generated questions as to why I carry a flashlight and about the particular one I was using.
These two are currently my favorites. The Fenix model on the right runs on two AA batteries. It generates 205 lumens, has a steady and strobes setting, as well as high-power and low-power settings.
The StreamLight model runs on 3 V lithium batteries and puts out a whopping 600 lumens. It, too, has high-power and low-power settings, as well as a steady beam and a strobe light function. Both flashlights will cost you about $60 on eBay.
Flashlights are invaluable. You can use them for a number of things, as well as a way to temporarily but safely blind someone who is threatening you.
If you are not carrying a flashlight with you on a regular basis, I highly encourage you to do so.