This is an amazing light fixture. I bought 2 for the porch lights and they were the correct color temperature of 4000-5000K. I was afraid they would turn yellowish, but they are not. The only problem I have is they are too big to fit on my porch so I put them in the garage. Now the garage is so well lit I have to clean it out so maybe I should downgrade lol. It's not the bulb, I didn't pay attention to the size of the bulb. It is about 6 inches in diameter and about 6 inches in length. I don't know longevity yet.
Lamp LED Yeelight Smart LED Bulb 1S, YLDP13YL, E27, 8.5 W, 6500 K
43 Review
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review