My first job after getting my BSEET degree from College was at the Trans-Lux Corporation, manufacturers of large scale LED displays. At the time, only yellow, green & red LEDs, mostly for the NYSE, AMEX, CBT & CME. I was the LED Specialist, responsible for equal radiation profile for all LEDs in a scrolling display.
it's 4:20 minutes a time waste to watch this. not much more than amazon affiliate advertising with pretty much no useful information given. doesn't even tell how much lumen the thing has; other than the likely copy&pasted nonsense data in the description. 4800 lumen? do a research how bright a light with 4800 lumen really is and then recap the info you spread to people. very disappointing.