20W (150W - 200W Equivalent) A21 LED Light Bulb, 2400 Lumens 5000K Daylight White, E26 Medium Screw Base, Not-Dimmable, UL Listed, XMprimo - 3 Pack

Let me start by saying that I bought these as a supplemental light source for our plants. Before this, I had been using CFL bulbs and tubes. I also use a light meter to help figure out how much light is being given to the plants. The meter ranges on a scale of 0-10. For all of these CFL bulbs, it seems your plant has to almost be nearly touching the bulb just to get a light rating of 1 and up. Not really good if you've got plants far away from your light source.That being said, we keep a lot of low light plants in our bathroom and have been using a large CFL for supplemental light. However, it didn't seem like it was cutting it anymore and I wanted to see if anything brighter existed. Before this I bought another CFL "grow light" and LED as a replacement - both labeled as 150W and 5000K. In reality, they were more like 100W or less and actually weaker than the original CFL I wanted to replace.I came across these and decided to give them a try. Plugged in the first one and it's pretty much a miniature sun that turned our bathroom at night into daytime. It's significantly brighter than the original CFL and the two replacements. I took a light reading to see how it compared and it is without a doubt more powerful in terms of luminary power. Here are my readings of the old lights vs. new LED:OLD LIGHTS (100W Led and CFL)Furthest plant (2' away): 0-.25 light ratingClosest plants (5" directly underneath): 1 light rating150W LEDFurthest plant (2' away): 1 light ratingClosest plants (5" directly underneath): 2 - 2.5 light ratingI also bought a 3-way light splitter just in case I wanted more power from the extra bulbs. I tried two bulbs and took another light reading and it was a 2 for the furthest plant and 3-4 for the closest. These bulbs are a 100% improvement over the previous grow lights and exactly what I was looking for. They have everything I was looking for and will no doubt help keep our plants happy where there isn't enough sunlight. I'm also going to buy the 3000K/warmer color version of this bulb for our living room and kitchen to replace our other CFL's.PROS:-Very bright and powerful-Nice daytime light that doesn't feel too sterile/medical-Is an ACTUAL 150W equivalent-Look and feel sturdyCONS:-They're a little bigger and heavier than the average LED

I had two of these in a basement storage area that needed extra light. The brightness is great. One of them started flickering very badly recently. I looked up when I had purchased them and was surprised it was almost exactly 4 years ago. One is still working. It was a three pack, so I just screwed in the third bulb into the socket of the one that went bad. I will see how long the first one and the third one lasts.

I was immediately surprised at the heft of the bulb when I removed it from the box. I am guessing it’s the weight of the heatsink, but I don’t really know. I ran the bulb for 20 minutes in an open floor lamp (only a lampshade) to test before it goes to the garage. This thing (the base) gets very hot—untouchably hot, which surprised me. I am not expecting these “bulbs” to last very long, so I’ll update this review if they do or don’t. Unfortunately, reviews on LED bulbs aren’t very useful outside of first impressions; people review these things when they’re new and still functioning. Obviously one of the values of LED lights is the longevity, and that’s directly related to how well heat is dissipated.Update, Oct 2020: Bulb still running well. Considering what an absolute crapshoot LED bulbs are, this is saying something. (LED bulbs tend to proclaim years and years of life, but my experience is that they fail often, probably due to heat. And no matter the brand, you’re 99.9% getting something manufactured in China that won’t last.) I may have just gotten lucky with this bulb, but I’m happy it’s still going. If I get 5 years of intermittent use out of it, I’ll consider it a victory.

Lights are bright, almost daylight bright. Great for room lamps and overhead fixtures.Highly Recommend.

My wife was complaining about the light in her sewing room and wanted me to get a new lighting fixture to provide better lighting. I explained that the max wattage for the wiring was 60 watts. When I saw these bulbs on Amazon that use only 20 watts to provide 150-200 watt equivalent light, I decided to give them a chance. I screw one of these bulbs in the existing fixture and was amazed with the bright, white light. When I showed my wife, she was thrilled. Not only did I make my wife happy, but saved money by not having to replace the fixture. Also, after seeing how great these bulbs are, I used one of the bulbs for my handgun/rifle workbench. I will definitely buy these bulbs again and I would recommend these bulbs to anyone who needs good bright, white lighting for work or hobby.

*UPDATE 2018-01-21*The seller offered a couple of choices to remedy the situation. So I've decided to order 3 additional bulbs (at a discount) in hopes that the one failed bulb is the exception not the rule.*Original*After only 2 months, one of the bulbs is dead. This bulb is in a lamp that is used about 12 hours/day. The product description says, "Up to 14 years (with 3 hours/day) lifespan, reduces the hassle of replacing bulbs.". That's about 15,000 hours; mine lasted about 800 hours!

Nice bright bulb, metal base for heat dissipation, will fit standard porcelain base - but will not screw all of the way into some fixtures because of abrupt flare of base above threads. I have a low ceiling basement that is below grade, so I need bright lights and fixtures that have an open cage around the lights to keep them from being broken. They will not screw all of the way into the fixture base, but are great in the standard porcelain base in my attic.

I bought 1 set (3 bulbs). Installed them in a semi-open canned lights (recessed) indoors.After two weeks and 6 hours of daily use, one bulb has failed already (14 x 6 = 84 hours)!However - the company has excellent customer service. They were very proactive and offered an IMMEDIATE REPLACEMENT or refund.Excellent customer service! The remaining bulbs are very bright. They give a nice daylight balanced bright light.