Non-Blinking Water Proof LED Mini Light Light up Paper Lanterns,Balloons,or Vase for Birthday Party or Wedding Decoration (Warm White, Pack of 24)

At first I didn't know if they worked or how they worked because there weren't any instructions, but upon unscrewing the bottom I noticed a paper blocker that separated the charge and plastic keeping the batteries in place. The brightness of the LED is way better than those finger lasers you get at the novelty shops and works great for my fnaf cosplay because they're just the right size. My main complaint is that even when you unscrew the bottom it sometimes still sparks a charge

They fall apart easy and DO blink unless you screw them tightly. For them to be turned off you have to unscrew them almost all the way - then the batteries and light fall out

They are simple to operate.

Not long lasting. Tested over half the bag and many lasted less than 30 minutes.

First of all, I only received 10 out of 12 lights I ordered for some reason. I don't want to do a refund/return because I'm going to use some of them, but something almost happened when I was testing out some of the lights. Some of them work with the batteries facing the opposite direction than other lights, which I found odd. BUT, if you find that some aren't powering on, CHECK THE BATTERIES AND BE CAREFUL OF OVERHEATING! One of mine wasn't turning on and I put it to the side and thought it was defective, but then wanted to try reversing the batteries. When I opened it to do so, the batteries had already gotten pretty hot and I had to let them cool off for a minute. That was only after a few seconds, imagine if I would've left it there over night or something. Please be careful with these, they seem cheaply made and not very safe. If you know what you're doing and are careful, fine, but please don't just let children or even teenagers play with these without parental supervision. I'm using them for a costume and they should work, but the overheating thing will always be in the back of my mind.