SEBSONG4 LED Bulbs Warm White 2900K 2.5W - 4 Pack - 20W Replacement for Light Bulb, 200lm, 130º Beam Angle - 12V DC Light Bulb, Non dimmable - G4LT Round LED

I purchased one of these to try as the size was not fully specified in the advert, and it was a good job that I did, as it is unfortunately just too large a diameter to suit my light fitting. 2mm smaller diameter and I would have bought another 10 .The lamp is well built, and even though it does not exactly fit the lamp unit in my kitchen, the wires do connect and I have installed it in place of theoriginal 20 watt 12 volt halogen bulb, but had to leave the cover off. It gives a good light, much brighter than the bulb that it replaced, and uses a sixth of the power. Sadly to make full use of these bulbs, I will have to change the fittings, but over a period, I should get my money back so I have arranged to do that in the near future.Pros.Good product and works well.ConsA bit too large for my fittings.

LEDs have been fighting to beat halogen bulbs for the last few years. One of the G4 halogen bulbs of my cooker died so I decided to give this LED a chance. The original bulb was a G4 12v 20w halogen. This LED claimed to be a 20w replacement. I would say it fails to deliver on that but it's pretty close. It would certainly beat a 10w G4 or a 15w G4 (if there was such a thing) but it falls a bit short on beating a 20w. It is quite common for LEDs to overstate their halogen replacement capabilities, although in this case it's quite close on delivering the sales promise. The light colour (Warm White) is quite good and shouldn't be an issue. The unit fit almost perfectly on the rounded whole of my cooker, so clearly Sebson have got their dimensions spot on. I didn't have to replace any transformers, the LED worked perfectly as straight replacement. Sebson claims a ~90% energy saving. Again this is an slight overstatement since 2.5w is 87.5% of 20w so it should be a 2w LED to give 90% of energy savings. Still there is a massive saving of energy so based on that, the perfect fit and the good colour matching I give it 4 stars!

I have a number of downlights with G4 halogen bulbs which are 12 v powered by small transformers have been looking for a quality replacement,have purchasd chinese imports for other bulbs which have not been durable.I purschased a sebson e27 30w bulb 3 years ago still working great.After reading some earlier review saying these will fit in standard downlight mounts decided to buy them.They will just about fit is a standard downlight fitting but as someone else suggested the reflector isnt needed as they are one directional so cut some of the reflector away with tip snips and they fit perfectly.The quality of light is good it is warm white and brighter than the g4 halogen they replaced I had a little flickering with one bulb which I take to be using a non led transformer but this has settled down.Otherwise happy 2.5W instead of 20W.I will be ordering more

When the box arrived, there was a sticker label on it saying that the 4 LED units must be used as a set. Since I only needed 3 for my NEFF hood extractor, no surprise that they didn't work and I had to send back. So I can't comment on their quality or performance. It would have saved both the seller and me some grief if the item description online stated this fact....

These work well for about a year and then the individual LED cells start to fail so within say eighteen months you will need to replace them

My caravan has 7 flat round lamp holders which contain small cylindrical G4 halogen lamps. These get ridiculously hot when in use. Few of the holders are starting to show signs of heat damage, so I sort an LED alternative.These are perfect for the job as they are noticeably brighter than the originals, generate virtual no heat and use far less power, which is an important consideration if you plan to run off the van battery.They are a slightly tight fit in the holder but we're easy to fit and didn't impede the refitted of the lens at all.Well worth the effort I think.

When we moved to our new house there were around 20 halogen G4 bulbs, 20W each, in and under the kitchen cupboards, and together with the massive halogen spotlight bulbs also in the ceiling, when all the lights were turned on it all added up to around 800W!! A totally ridiculous running cost for lights, not to mention the heat put out in to cupboards. So top of my list was replacing them all with LEDs. These bulbs fitted nicely in the existing lamp units, and I put in new Sebson drivers at the same time. To start with I was very pleased with them, but be warned, THEY DO NOT LAST. After just over two years I have already had to replace 7 of these, the first one failing at just over a year old. They just suddenly fail and start flickering badly, followed by some of the individual LEDs failing completely. I thought Sebson was a quality make but these clearly fall short.

Bought four of these just over a year ago, to replace G4 halogens under the kitchen cupboards. These were the only LED bulbs I could find that were small enough for the fittings, but bright enough to be a suitable replacement. I replaced the transformers at the same time. The first bulb failed at the weekend, after less than 1000 hours of use. It also failed short circuit, meaning that all other bulbs on the same transformer went out. Maybe this was just a one-off, so I'm replacing the failed bulb with the same item for now, and I'll update this review if any more fail. I've used other Sebson bulbs and been pleased with them.