
I bought 8 of these on October 1, 2021. Two of them failed within 3 weeks. The seller replaced them with no problems. Now, on November 15, 2021, another has stopped working. It doesn't work in a lamp, but as a flashlight it fits. There seems to be an error. A little loose in the bulb. I hear a roar. I like the idea that they will turn on in an emergency. (I tested them by turning the circuit off.) They are bright enough. But as a lightbulb they are useless. Unfortunately I can't recommend it or buy it again. Not worth the investment or hassle associated with constant contact with the seller.

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