I will be buying 8 more of these for gifts. this is a fantastically good flashlight - I use if for running and biking.
Additionally - the clip is very helpful, the size is short enough to easily fit in a pocket and a very powerful light. I own several other LED headlamps and flashlights and this is my favorite for carrying.
its just a bigger version of the popular AA one. it has slight visual differences than the smaller one, but i think it works excellent. mine has 5 modes though, high, med, low, fast strobe, slow strobe.
for the smaller ones, there were flashlight tubes that people bought and attached so you could be powering it with more batteries. i'd love to get some for this sized device.
Cant really say if it is 1000LM, but its definitely brighter than my redline nebo. Flashlight itself seems pretty sturdy and its small enough to where I can clip it onto my pants instead of carrying it inside my pocket. I really wanted one that didnt have the numerous flash modes (just wanted a bright flashlight with on/off), but I dont regret the purchase, its still a decent flashlight. I will probably be carrying it around everywhere. I also noticed a high pitched noise coming from the flashlight when its on. Its nothing extreme, and youll only hear it if its right against your ear.