The title says 100000 lumens, but in one of the top 5 reviews it says it has 3000 lumens… Which is it? That’s a pretty stark difference. My husband is a OTR truck driver, and goes thru flashlights on a regular basis. The flashlights that he buys are all expensive & supposed to be superior, military grade, BS. I guarantee if we sent any of our military people out with some of the crap he tells me about, they wouldn’t stand a chance. He has one of the most dangerous jobs out there, he drives overnight, and if he has a problem with his truck or trailer he needs a dependable light source. I’m thinking this may be a good option. But not if it’s only 3000 lumen. I’ll try the Big Daddy 100000 lumen- go big or go home, right? 
Consider that this “ERBRIGTLI” brand seems to be created by … well, this:
… I feel you’re really better off looking at something that either Project Farm and/or the Torque Test Channel has tested.
This should lead to a whole playlist as TTC has done a series of them:
(Note that I am not staff. I just volunteer to help out on the forums.)
If you want a light that is going to be bright and durable look into the Fenix brand. My wife bought me a PD40R a few years ago and it has survived many drops on concrete, into the mud, into water and is still going strong. They are expensive but worth every dollar. It is very bright. I hope no one here actually believes the 100K lumen lie. I doubt if the one here is even 2500.