Overall I like the bulbs. I've replaced several lower wattage bulbs that weren't consistent. All the ones I replaced were said to be 800 lumens. These lamps should be significantly brighter, but I can't tell any difference. They are bright but without being able to measure lumens I can't really tell. Visually (at least for me) the lights are only marginally brighter. I also find that their color is slightly different. There is a light pink tint on the face. It doesn't seem to show up in photos on my phone due to color correction, which I can't turn off. It's not a problem for me, but maybe for someone. I probably wouldn't buy bulbs again as the color isn't exactly what I'm looking for. However, they are good, flasks. As for heat dissipation, they do not heat up the room. After fifteen minutes of running, they still feel cool. No flickering and they turn on and off instantly. As I said, I like the light bulbs in general and I find them to be of good quality. Although the shade isn't exactly what I need, I won't be buying them again.
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