
This applies to 100W warm white bulbs with 1500 lumens. After installing the first one, I realized it wasn't as bright as a 100w incandescent bulb. I took a light measurement app on my phone and measured a 100w bulb and got a reading of 1430 lumens and a color temperature of 2900 Kelvin. By swapping out these LED bulbs I got a reading of just 950 lumens and a color temperature of 2800. That's over 1/3 less than the wattage rating, so I tried a few of the 16 bulbs out of the box and got very similar readings . went to a local large store and bought an equivalent brand name 100w LED bulb. Physically the bulb is slightly larger and the light output is a whopping 1470 lumens with a color temperature of 2900K. It was what I expected from Revain brand bulbs so I was disappointed. I checked the labels on the bulbs to make sure I wasn't getting the equivalent of 75 watts and no, they were supposed to be 100 watts. This is the first Revain brand product that I have been disappointed with - apparently they did not test the quality of these bulbs before labeling and selling them.

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