This light is very powerful for its size it seems like a much bigger light. The light has a wide throw pattern that is great for most people does not have a long throw pattern but long enough. I like it because it lights up a very wide area making you able to see everything in your immediate area with no dark spots. I don't like that it does not have a tail switch and the side switch is hard to find without looking which makes it not ideal for tactical use. If this light had a tail switch it would be the best light that I own due to its brightness level, run time wide throw pattern and size.

I recently purchased this because I have the Klarus XT11GT and a Klarus XT12S Both of them are awesome lights and have great UI's. I purchased the G15 for the big 4000 lumens output. It arrived and I finally got to open it and check it out. I like that it fits in a pocket or can be clipped to a belt and the fit and finish is very good, what I expect from Klarus. I am a little uncomfortable with the UI, Probably because its so much different from the other Klarus lights I own. This light is very bright and has a ton of spill, so much so that you can catch yourself with the spill, kinda like welders flash. I think for the way I use my lights I should have purchased the XT21X as it has the 2 button on the end cap and kinda more focused beam, and I think the UI is closer to the other Klarus lights I own. That all being said, if you want a super bright light to work around the house or light up the yard or Yards around you this will do that. Inside the house low and med seem to be plenty and they don't suck the battery down, on High depending on what your are doing it is bright enough to cause some glare issues as well as on turbo mode. On high it gets a little warm but not as much or as fast as in turbo, that heats up pretty fast. But 4000 lumens you need to expect some heat. Overall it is a very nice light, and if it is the type of light you want I think you will not be disappointed in this flashlight. My only complaint would be that the rubber flap that covers the charge port seem to fit much looser than it does on any of my other lights and have accidentally popped it open a few times pushing it thinking it was the on off switch. I will probably try and exchange it or resell it and buy the XT21X to replace it.

This is a good light for around the house and yard. I have a big fenced yard so this is a good light for that purpose. When I need a broader beam light I use my XT11GT. Will probably upgrade to the XT21 soon. Can't beat the Klarus lights.