The light is fantastic and more than what I asked for. I originally ordered 300 and then ordered two additional 450 lights but unfortunately, I only received 1 of the 450 lights. I’m confident this could be resolved. But as for what I have, they are remarkable, highly recommend them and within a few days I felt that tremendous difference in muscle inflammation and skin tone. I work out pretty rigorously and use them 10 minutes prior, go on my cold plunge and then do an additional 20 minutes of the lights after to re-warm my body up. I also use it again in the evening.