I needed this size for a wall candle sconce. It fits perfectly in the taper section to give the glow I was looking for. The brightness is what I was looking for too. I wanted a white light not a yellow light. These are great value for money.I purchased these lights for paper lanterns used inside our tent at our wedding reception. The build quality of the lights is acceptable. The lights are turned on by twisting the base of the light where the eyelet is. These lights fit on the hooks of the paper lanterns. Most of the lights worked for several days after being turned on. Some only lasted mere hours but that is why I bought a lot of them. They are bright when hung as shipped but they were not as bright under a tent with other complementing lights. We couldn't tell they were on and we only had white icicle lights around the perimeter of the 20 x 30 tent. Overall, I'd buy these lights again and use in a different setting or away from other light features to show off the capability of these small bulbs. If you are going to hang these lights inside paper lanterns and the lanterns cannot be easily accessed good luck. Either turn them on, place in lantern and then hang lantern or be prepared for some of them to fall to the ground if you turn the lights on while installed in the lanterns. Some of them required force to turn on. 4 stars only because some of them did not work.I bought these little lights to give some life to some butterflies and ladybugs that we used as a decoration at a graduation party. but to make sure they worked well let 3 of them on for 24 hours and they were still working beautifully. They are really bright and start to fade little by little but after a good 6 to 7 hours but even the next day and after 24 hours you could clearly see the warm light so I really recommend this product.So far so goodI bought a pack of the red LED lights for an art project. They are extremely bright with vibrant colors. I have not run into any problems yet: all 12 that I bought seem to turn on reliably. They can be used for many things. Since they are pretty cheap, at a local night market, they were also made into little necklaces for kids (who absolutely went crazy for them).You turn them on by twisting them until the battery inside can complete its circuit. So no button to press. Unfortunately, that means it would be a little bothersome if you wanted to make a permanent display in your room or something, since it would require that you unscrew/screw it every time.The battery life lasts for a long time and you can replace it too. I highly recommend and will probably buy some other colors in the future.I purchased 60 of these lights to put inside of white balloons for some Christmas Eve magic as a snow substitute. (We live in the South and it is 75 degrees this year on Christmas Eve.) The positives: This product arrived very quickly, initially the lights were bright enough to make the white balloons glow beautifully, and we managed to have a bit of Christmas magic. The negatives: We did not receive 60 lights...more like 45. Several of the lights were yellow and not white, as you can see in the photos. We also lost about a dozen of them due to them popping the balloons after a few minutes...not sure whether they overheated or what, but it was unnerving for the little one to have so many balloons randomly pop. The biggest drawback was the length of time these lights stayed bright....after approximately 30 minutes the lights were noticeably dimmer and by the one hour mark the balloons no longer glowed in the dark. Fortunately we only needed half an hour to play and take pictures before we went back inside to open gifts, but such a shame that we did not get to continue to enjoy the Christmas magic with these lights. (Photo one with the little girl is when the balloons were bright. Photo 2 of just the balloons was almost one hour later when they had all dimmed out.) Overall, if you are looking for 15-20 minutes of light then these are a good, cheap option. Otherwise, I would pass on these....I will not be purchasing these again.We used these in lanterns for our wedding. 5* quality for having a YELLOW glow light rather than the gross LED white that most lantern lights give off, which are totally unattractive. This was a warm glow.Only reason I'm giving 4* is because our wedding planner didn't know that you have to twist them more completely in order to make the light bright. As a result, she only twisted them on barely and the glow was extremely dim. This was probably user error, but it would be better if they glowed brightly at the first twist instead of taking prolonged twisting to get maximum brightness. User be aware and tell your helpers to twist fully!So many uses for these little lights! I ordered a small pack of these lights to see if I could use them in cheer bows, and they worked perfectly. The lights are very bright, but not overbearing. They are small and lightweight, and since I've discovered them, have started thinking up so many other uses for them! Each of my lights worked well - you simply twist one way to turn them on, and twist the other to turn them off. They are very easy to use, and so far, the batteries have not gone dead and the lights remain bright.I will be ordering more, and would recommend these to anyone that wants to add a little splash of light to... well, just about anything.I used these inside vases with marbles in between for centerpieces topped with feather decorations. They came out beautifully and provided subtle lighting for dining tables. The event was on Saturday, I turned the lights on about 45 minutes before the dinner started, cleared the centerpieces off the tables to get ready for the dance (didn't turn them off), and packed up everything the next day to bring home (still didn't turn off). It's now 4 days later and either out of sheer laziness or amusement, I haven't turned them off and they're still going. I bought these in white & purple from this company and I DEFINITELY recommend and would certainly buy again if I plan any more events. Excellent product & best price I've seen anywhere. Thank you!I was a little skeptical of these lights but I took one of the little buggers out of the little bag turned it on and it has been on for 6+ days as of writing this.... it is isn't as bright as the first days of course but still very visible...Highly recommend re:edit over a week and a half the little light is still burning...lolReceived the lights the other day. I was really surprised when I got them because it came a few days earlier than expected. Lights overall are really good. I didn't give it 5 stars because 2 of the lights were duds. Batteries were dead. I haven't tested them out in the paper lamps. They aren't that bright so I'm guessing it will have a super soft glow effect in the paper lanterns.buy more lights than lanterns, expect about 4 hours life and about 10% to not work. They are a cheap one time use thing unless you can find batteries for next to nothing and have the dexterity of a brain surgeon to replace the batteries and re bend the tiny wires.Only reason for no 5 star was some were a different "white" colour.I love them. They all works.. well I'm little bit confused. Now the lights are starting deam( low lights ) it start bright now it looks it's starting to run out of light. WhyAlthough a few of the lights didn't work (that's to be expected) this is a truly fun product. Used quite a few this Christmas dinner scattered on the table and submersed in floral arrangements. The effect was beautiful. Love the fact that they give off a warm light rather than the cold bluish led light