SunSun Lighting A19 LED Light Bulb, 12W (75W), 1000m Warm White, (3000K) Dimmable

I purchased 3 A19 12W LED lights in early Sept 2013; all three started flickering after about 40 days' use. I've had to stop using all of them.Furthermore, they really don't dim very well as compared to standard incandescent or halogen bulbs. I'm not sure whether any other LED lights would dim better as I've not tried them. But don't expect these to get dim.They're similar to soft white incandescents in their color temperature but definitely have a higher color temperature than those. I don't mind this difference but wouldn't want to buy the "cool white" version of these lights. But the flickering makes them completely unusable.I have written to SunSun to request warranty replacement. Will update with progress on that. Given that all three started to malfunction after so little use, I don't have very high hopes for the replacements. I'd definitely not purchase these again.***UPDATE JULY 2014***SunSun replaced all three bulbs in October 2013, no questions asked. All three replacement bulbs have now stopped working again. I'm currently pursuing a second warranty replacement. Yeesh.***UPDATE NOVEMBER 2014***SunSun has now sent me a total of 9 replacements as all of these bulbs have failed multiple times. I've had problem getting the defective bulbs replaced, in fact their customer service has been very easy to work with, but I finally asked them whether they'd prefer to issue a full refund rather than continue to replace them. They sent a check for all but the tax I paid. Still, I can't recommend these bulbs since none of them lasted more than half a year.

Disclaimer: I work in the field of lighting.I have conducted a home experiment comparing this Kobi 15W / 2700K/ 1000 lumen Warm 'light bulb' (hereafter called a 'lamp') to the closest equivalents available on Amazon, the Philips 11W / 2700K/ 880 Lumen 'Soft White', and the SunSun 12W / 3000K / 1000 lumen 'Soft White' lamp. All claim to be dimmable, but were only tested at full voltage. All three were installed simultaneously in a 3-light-source bathroom fixture. I judged by eye, rather than meter, just as the average homeowner will. My eye, after 25 years working with light, is pretty trustworthy on this stuff. The results:1)Intensity, or brightness: as expected, the 11W Philips was slightly dimmer, accurately reflecting its 880 lumen rating compared to the other two, which we each rated 1000. However, the difference between the 880 lumen Philips and 1000 lumen Kobi in intensity was marginal. The SunSun unit appeared disproportionately bright, but that has more to do with its appallingly ugly color....which leads us to:2) Color. First, some background: What people see as the color of a light source is measure on 2 scales, one familiar, and one not so. The scale most people know is called Kelvin, or color temperature, and is on every box as a 'K' value [2700K for the Kobi, 2700K for the Philips, 3000K for the SunSun in this test]. The lower the number, the 'warmer' the light appears, although it's actually a measure of yellow vs. blue. [A traditional tungsten light filament in an incandescent lamp produces a light typically in the range of 3200K. This can be more complicated as we get into discussion of black body radiation, but I'm just trying to do a review here for someone who wants to know the difference in light bulbs, so I'm keeping this straighforward.]The Kobi and Philips were appeared identical in K, and as expected with its higher Kelvin rating, the SunSun was bluer. However, this was not as important in this case as the scale with which most people aren't familiar, the red vs. green scale. The SunSun unit was noticeably, unpleasantly, green-er to the eye and on skin than either of the other two. This also lent it an apparent shocking brightness, but that's deceptive. The Kobi was slightly 'pinker' giving skin a more healthy look overall. This (Kobi) was my favorite or the color temps.3) Only the Philips lamp did not produce a horizontal line in the diffuser of the light; in other words, a 'shadow line' across the glass. The other two have a mechanical metal bodies, with roughly only a hemisphere of light source (what you can think of as the illuminating part of the 'bulb'). In other words, the light from the Kobi and SunSun is more directly focused down (in a lamp screwed upward into a light fixture). This means that if used in a glass diffuser or a lighting fixture with a traditional shade, a hard line appears halfway across the shade, projecting light below, but none above. In some fixtures this directed focus will be ideal, as less light is wasted shining out the 'back' of the lamp, but in some applications, this will be unacceptable (like a large or decorative lampshade that is meant to be illuminated from within and show a pattern).4) Finally, only the Philips lamp has an obvious diffuser across the source of the lamp, or simply put, it's not glaring to look directly into the Philips. It was painful to look into the SunSun, and less so with the Kobi.So, A quick summary of pros and cons to help you choose:Kobi Warm 15W: Pros: Most healthy, pleasant-looking light on people. Brighter than the Philips. Made the SunSun look plain ugly next to it. Cons: Will throw a hard line across a lampshade or glass diffuser.Philips Soft White 11W: Pros: at 11 watts, an equally pleasing light, and does not throw a shadow across a lampshade of glass diffuser. Cons: not quite as bright as the Kobi.SunSun Soft White 12W: Pros: appears brighter than the others, but color temp lends to this deception. Cons: UGLY, ugly light. Greenish and bright, one cannot look directly into the 'bulb'. May be appropriate for a concealed source where a bright, harsh, daylight look is desired (although, again, it's greener than daylight). Will throw a shadow line on a diffuser or lampshade.

I bought two of these for a pair of torchiere floor lamps in my living room. The light was a good color temperature, there wasn't any noticeable flickering or noise, and they have all the usual benefits of LEDs; instant-on, no warm-up time, low energy usage, etc. However, one of the lights died after 4 months, and the other died after about 9 months. Both of them failed the same way; they work OK for about 5 or 10 minutes, but once they heat up, they flicker off for an instant up to a few seconds before coming back on, only to flicker again a few seconds later. A great effect if you want to set up a haunted house - not so great for the living room.I contacted the company after each one failed to get a replacement. The first time, they gave me somebody's E-mail address, and mailed a new bulb out to me. Not exactly a streamlined process that you'd expect from a bigger company, but it worked. (This replacement bulb is still working... but how long will that last?) The second time, I E-mailed again, but never heard back. In any case, I replaced the second one with a brighter 19W Philips LED bulb instead, and for less money. I've had about 10 of their bulbs for a year with no failures, so their track record is far superior in my book.It's possible they had a bad batch or something - I see at least one other reviewer who bought about the same time as me had his bulbs fail too. However, I'd rather go with a different brand and hope for better reliability testing. I've purchased probably 6 different brands of LED bulbs over the past 3 or 4 years, and the SunSun ones were the only ones to fail.

the temperature on these is great, seems like a nice soft white color. however, they have a LONG lag time after you flip a switch. probably 1/2 second or something. also, i tried them with a Lutron Skylark dimmer and they performed terribly. with two bulbs in a ceiling fixture, often they both would turn on but would then flash constantly. (about 2x per second to give you an idea).i put a 2 year old Phillips dimmable in the socket and no issues. i put two newer Kobi bulbs in and they worked very well.i'm sending these back to get some more Kobis,these would work well for an area in which the lights are left on (because of lag). but there are better performing, less expensive bulbs available, so why waste the time ?