These are probably the tiniest and the strongest spot lights you will find for a drone. 4000 lumens is a lot. I'm surprised it's a constant beam at 4000 lumens until the power runs out. Lasts about 30 minutes. The light it throws off is insane. I velcroed it to my M3, see pic below. They are about 50 dollars on Amazon. If you want to see at night, you will. It's way less expensive than the crap that is made for drones and is way more powerful. I had to buy 2 so, I could replace it when the battery dies. Again, lasts about 30 minutes.
Here is a link for amazon. https://www.amazon.com/IMALENT-Flas...hvlocphy=&hvtargid=pla-4584070147601752&psc=1
Here is a link for amazon. https://www.amazon.com/IMALENT-Flas...hvlocphy=&hvtargid=pla-4584070147601752&psc=1