Excellent build quality, and extremely bright; as others have mentioned there isn't a huge difference in brightness between the high and turbo modes, and it does get kinda hot at the two higher brightness settings, but that's to be expected.
I'd like to see a version with an adjustable beam focus, and integrated charging.
Although the rotating lanyard C-clip is good, a more robust supplied lanyard would be nice. I don't particularly trust the skinny C-clip attachment loop end of the supplied Lumintop brand lanyard to provide long-term retention of the relatively heavy light, so I braided an adjustable paracord lanyard. There appear to be two supplied lanyard styles; some of the product photos show the version I received, and other photos show a version where the entire lanyard is the same cord diameter, which would have been my preference.