For urban use, I find it best, for several reasons.
1. First of all, the size - small and flat, bears not on, super easy. Prima, because as the keyring is not spreading. It can also be more easily put in your pocket a ladies pants (so no trekking pants with large pockets), if you want to get out sometimes without pocket.
2. lighting modes: 1 Lumen is just right to ect to find the keyhole, for example. - 45Lumen are really bright, a small room lit from passable. And for this pipsqueak. Everything in between can be controlled, as you need it, which is a big advantage continuously adjustable. I was prevented from buying the ThruNite Ti3 especially that 12-120 Lumen no gradation (12 lumens bit dark, 120 lumens usually not necessary).
3. recharging via USB - practical for everyday use, since you do not need long the lamp at a time and then back home has an electrical outlet available.
For a 30-minute home in dark corners, for example, the lamp enough for close range. For indoors it enough anyway (Keller, PC illuminate etc.)
If I know that I really need bright light a long time (at night in the woods), I'll take the same have a real flashlight. So I need the keys in his town no longer, then rather flat and small, have to really always there.
What the Tube is not, of course, is a focused bright spot in the middle. Who is also at a keychain lamp arrives at range, should take another.
The rubber closure of the USB ports is a little limp, but I was no point deduction, which would be inappropriate, since I am very satisfied overall.
