MR16 LED Bulb Dimmable GU5.3 12V 2700K Warm White

I got these to replace 12V MR 16 quartz halogen MR16 bulbs in a dimmable fixture. Nope. In my setup they weakly glow and occasionally flicker. I tested them using a bench power supply. I set it for 12 volts DC and the lit up. They dim down to near nothing at 8V. They draw just under 5 Watts. So they work, but they seem to be more yellow than the normal amber glow of a 2700 bulb. I wouldn't call it warm white, but more towards light yellow. If I had a set up which worked with these bulbs I would not buy them because of the color. Perhaps you want something more yellow than the amber glow of most warm white bulbs. And, most importantly, LED bulbs might not work with your old 12V halogen fixtures, don't blame the bulbs. There most likely won't be any other LED bulbs that WILL work.

[Number of Items: 6, Wattage: 5.0 Watts]
I have a bunch of 12V accent lights installed above the windows in several rooms in my new apartment. Many of the original halogen bulbs were burned out, and I figured it's time to replace them with LEDs. These were a perfect fit. I just unplugged the old ones and plugged these in. With dimmers in all 3 rooms, I didn't get any flicker at all. These were brighter than the old halogens (admittedly I don't know how many watts they were) and the coverage was good as well. Setup for my fixtures was easy - just unplug the old and plug the new ones in (some other fixtures require you to loosen screws, so be aware of that before you try to just pull your old bulbs out). The quality seems good as does the price. They do, however, put out more heat than I'd expect for LED bulbs of this brightness; obviously less than the halogens, and not hot enough to burn, but more than other LED bulbs I have in other fixtures. I'm not sure if this is because they're 12V bulbs, and are therefore are less efficient than 120V bulbs, or because they use poor quality electronics. At any rate, as long as they last a while, I won't complain too much; they're still an order of magnitude more efficient than the halogens.

[Number of Items: 6, Wattage: 5.0 Watts]
These bulbs work exactly as expected. The 2700K gives off a nice warm light. They fit well in my fixtures and provide a good amount of light for their small size. I also like that they’re dimmable. A good replacement for the older halogen-style bulbs, especially if you want the same warm feel with LED efficiency.

[Number of Items: 6, Wattage: 5.0 Watts, Number of Items: 6, Wattage: 5.0 Watts]
These two pin lights fit a standard interior track light rail and apparently they can be used in landscaping lights as well. They put out a nice warm yellow type light vs bright white 5000k type light and can be dimmed to a comfortable level without any flickering. This pack of six bulbs is priced well at less than $3 a bulb and the lenses are glass so they won’t dull over time if used outdoors in sunlight and can be cleaned easily.

[Number of Items: 6, Wattage: 5.0 Watts]
Got these bulbs to replace the other standard bulbs in my recessed lighting throughout my house. These LEDs run cooler and take a lot less power and work perfectly for what I need. Also my wife prefers the warm color of the lights over the bright white ones. It gives a nice ambience to the room.

I like warm landscape lighting reminescent of older incandescent days, and these bulbs do not disappoint. They are bright and have an even light distribution with no dark spots. They are lighter than the LED bulbs they replaced, and the connection pins are hollow vs the solid pins on my previous ones, but this shouldn't impact their performance as long as they handle moisture and heat dispersion well. Time will tell on that.My application is not dimmable, so I included photos showing brightness at various voltages. The bulb barely glows at 6v (no picture). The first picture shows the brightness with at 7.5v (display not readable). The most significant changes in brightness come between 7.5 and 10 volts, but it was smooth with no flickering.Assuming these bulbs last, they are a great price at $2 per bulb.

Initial ThoughtsI used them in my aluminum landscape spots, and they deliver a nice sharp light while keeping a warm look at 2600K-2700K. It has a fairly tight beam, but it is definitely on the brighter side so keep that in mind. If you want a more subtle warm glow, these may be overkill.PackagingArrived well-padded and safely boxed with zero damage to the pins or glass lenses, letting me swap out the old bulbs right away.Construction/MaterialsConstructed with sturdy, quality components that feel very solidly made, handling outdoor weather exposure without any issues.UsabilityDesigned with a standard GU5.3 base running on 12V power, making the drop-in replacement into existing landscape fixtures completely seamless. They feature a 40-degree beam angle for targeted spotlighting, operate with zero flickering, and put out a strong 50W halogen equivalent of illumination using only 5W.Final ThoughtsThey completely upgraded the brightness and clarity of the outdoor landscape layout while maintaining an inviting color tone. Everything is operating smoothly and reliably every evening.Rating: 5/5Very impressed, and highly recommended.

I have some self-installed track lighting in my kitchen that has bene there for 20 years. It pre-dates affordable LED lighting. Each of 4 circuits is now driven by a Tuya equivalent dimmer module so I can control them from anywhere on the planet (do not ask... my wife wishes you would). And the dimmer modules drive old-school toroidal step-down transformers to deliver 12V to the tracks.I have tried other MR16 dimmable LED bulbs but these are the first which provide a useful dimmable range in my set-up. They almost go down to a true glimmer, and do reach a power which is close to full-power. The progression has no visible steps, and except for the very lowest level, which I can prevent, there is no flickering.The 2600K color temp is close to the 2700K that I usually use inside my home. So close I cannot confidently tell the difference. I much prefer 2700K (and 2600K) because 5000K is just too stark, and the other common 2200K is too yellow (though perfect for outdoor all-night coach lights). The color temp is important because 'normal' incandescent bulbs change color temp as they dim and the filament becomes hotter and cooler; an LED bulb being governed by quanta of energy gaps in the semiconductor will vary apparent brightness by varying mark/space ratio of the 'lit' activity while keeping the same color temperature.Recommended.[Update] I am so pleased with these that I have ordered 6 more so that I have 8 matching bulbs, and four spare.