Ukey U GY6.35 LED Bulbs 5W Bi-pin Base AC/DC 12V 2700K Warm White Dimmable, G6.35/GY6.35 Base JC Type LED Halogen Incandescent 50W Replacement Bulb 6Pack (5)

I'm saddened to see the ignorance concerning electronics, lighting, LED lighting, and what this product is among many of those who have reviewed this product. What this product is: It is a nicely-arranged array of 2700K (warm white to yellow white) LED emitters that puts out even light in a 360 degree circle around the over one inch long cylindar. It runs off around 12 volts AC or DC. Between the power to the LEDs and the LEDs themselves inside this "bulb" is a relatively sophisticate switching power supply that provided regulated voltage to LEDs. So NO ordinary dimmer will work with it. This was obvious to me from the photo of the item here on Amazon. However, I found that a dimmer specifically for low voltage LEDs that operates by variable duty cycle square wave switching WILL to some extent allow dimming of the "bulb", if that is what one wants. But most of the "in the wall" dimmers... including those said to be for LEDs... will work. That, too, was obvious to me when I saw the circuit inside the "bulb". Curiously, a somewhat unusual electronic dimming system I had installed and wired in my kitchen for the 12 volt bulbs in hanging fixtures over my breakfast nook (which currently have 50 watt halogen incandescent bulbs in them) DID manage to more or less accomplish use-able dimming of these "bulbs". Anyway... what I liked about these "bulbs" is that they thru light evenly all around in a cylindrical pattern, which was JUST WHAT I NEEDED to illuminate the beautiful translucent and patterned stone fixtures I have hanging over my breakfast nook. However, alone they were not an adequate replacement. I had to ADD a disk of LEDs pointing downward, so I could BOTH light up the beautiful stone fixtures AND have adequate light aimed DOWN at the breakfast counter.

False to claim these bulbs are 50 watt halogen brightness equivalents. They are 40% to 50% less bright which is very noticeable! Switching to these will dim your room the same as putting sunglasses on your light fixtures. There will be light but it will be much dimmer and the bulbs will flicker when dimmed. Everyone who came into the room tried to make the lights brighter thinking the 50 watt halogens were still in the light fixtures. They couldn't make it brighter because the dimmer switch was already at its maximum brightness! They all said, it's too dim. Get brighter bulbs!

Good, except one bulb didn’t work. Quick partial refund by Amazon! Nice and bright lights!

Based on the reviews that these bulbs are not as bright as 50W halogens, I bought these to replace my 35W halogen lights in my island pendants, and the brightness was a perfect match. However, the color was definitely not 2700K. The task lighting (undercabinet) in my kitchen is 3000K LED, and the rest of the lights (aside from the pendants) in the kitchen are 2700K LEDs. These new bulbs are a match for the undercabinet lighting and definitely not the other lights in the kitchen or the halogens they were meant to replace. Disappointing. Trying to decide whether to return or not. Dimming works great - all the way down to very low light output, but we have the right kind of dimmers and the appropriate transformer. I would therefore advise treating with caution the reviews where the users blame the bulb for these dimming issues.

They do dim, but are not as "smooth" as halogens. At certain dim levels they will flicker but I found that if I keep sliding the dimmer in one direction or another they absolutely will settle and produce smooth light. At any rate they are way more economical than my previous pendant lighbulbs and they still look great. They are longer than a normal GY6 and I did have to remove the frosted glass bulb cover to get these to fit but that's not a deal breaker for me.

I have 12V high-end pendant lights and these did replace the 35W bulbs but they are a notch dimmer. Speaking of dimming, they do dim without flicker, but not all the way down to off. The light color is close to the halogen too. After a month of use all of my bulbs burned out. By burned out I mean they essentially caught fire and quit working in a spectacular way.

These were supposed to be 25% brighter than the original halogen bulbs, they are not, I confirmed with a light meter comparison and they are actually 30% Less bright, less lumens, less foot candles. If you are using for ambiance only and can accept a dimmer lighting, then these will work, if you want the same lumens light output to see on the counter, forget it, the description is not true. Confirmed with light meter measurements.

Received the bulbs and installed them in my pendant lights replacing the halogen bulbs. One of the LED bulbs burned out after approximately 4 hours of use. They are not as bight as the halogen but close. They do dim but only to a point where they are about one half as bright. I m hoping the one bulb was a fluke. Bought 6 and only have 4 lights. So far I am good... Update: the bulb did not burn out. After installing another bulb, the same thing happened in the same pendant lamp. I suspect an issue with the light cauing the bulb to overheat which is causing the bulb to go out. After it cools, the bulb works again.