I used them on stained glass lamps. The first one out of the box didn't work and this problem continued. I have tried them in various lamps that have been in use for several years without any problems. The first bulb showed no damage in bright light, but it just didn't work. Others have shown that they were damaged from the start. The ones that worked still work, but hey! 4 of 12 capsules? No big deal. They glow well when working, but make sure you really need a high flame size. For one of my lamps it would be better to use a shorter bulb. 40 watt bulbs are fine, I have to admit. They have been processed quite well. (I'm not an expert) I hope this helps someone make a purchasing decision.
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review