These are great build quality. I would say they are more in the 6000 lumen range, but whatever it is its definitely not 10k lumens. That said, they are pretty color accurate at round 6000k as advertised. The major problem these lights have is they get incredibly hot. I was going to use them indoors are supplemental shop lights however they get scary hot. I'd be afraid to accidentally leave them on over night. I tested them with cameras and there was no flicker or shutter roll, just in case anyone was looking for that info.
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