9 Pack Led Safety Light, Safety Light, High Visibility Strobe Running Lights Used for Bicycle, Walking Etc. Clip-On Running Lights Clip to Clothes Strap to Wrist, Bike Or Anywhere(Red/Blue/Green)

First off the battery life is insane. I’ve left one on 3 times during an 8 hour shift and it still works. I use them on my e-bike and they are pretty durable and held up in 4 rainstorms so far. Very impressive! It comes with a tiny screw driver, straps and a built in clip. The red and green are what I use since my state doesn’t allow the use of blue lights even static. They are small enough to fit in any bag and can be taken pretty much anywhere. They clip on super easy and work right out of the package. From what people have told me they are super bright from far away but I haven’t tested it yet. They are budget friendly, last a while, durable, and seem to work well so you might as well try it.

fantastic multi use led lights. so far we have used them for biking visibility all the time and hiking visibility in the evening/morning. they make biking so much safer when placed on helmet, back, front of bike. I haven’t run out of battery yet and they were easy to place where I wanted them. I plan on using these to clip on backpacks for our next concert or theme park evening show so we can all stay together!!

Just got these today. They're very bright. I used the straps to fasten them to my sons stroller/bike trailer. I also put one on his wrist, the small velcro strap is perfect size for that (he's almost 2). The strap is way too small to fit an adult wrist though, but would work if you attach 2 straps together. All in all I'm very happy with this purchase to keep my son visible and safe on our walks/bike rides. I don't plan on removing them repeatedly, so hopefully they last longer than others reviews.

I love these running lights since I often run at nights, because cars and bikers usually see me well, that is until the batteries run down. The newer 5 bulb versions are brighter than the 3 bulb ones, but then the batteries deplete faster. And while they are difficult to replace their batteries, they are cheap enough to just buy as disposables. They also come with optional Velcro strips so you can attach them to fingers, belts, straps, or dog collars, though I just clip them to my shorts or jogging pants, which works just fine, and they have never fallen off. Except for the batteries, I highly recommend them.

This is my second purchase of these lights, from separate vendors. The differences between the two models are subtle, and don't affect usability. The lights are much brighter than you might expect. If you look directly at them in the dark, they'll kill your night vision. There are three "on" modes: sequential strobing, which gives an up/down or right/left effect, flashing, where all the LEDS are lit or out at once, and steady on. I haven't conducted any battery life studies, but I assume that the batteries will last much longer with one of the strobe/flash modes. I've had only one light exhaust its batteries. Each light takes two CR2032 coin cell batteries. The battery compartment is accessible by removing four VERY small screws with an included screwdriver. The screws come out easily enough, but you need dexterity and, ideally, small hands to get them back in place. Pay attention to the configuration of the batteries, i.e. which side goes up in the place for each battery. One slot has the positive side up, and the other has the positive side down. I use these to clip onto my dog's harness when we take nighttime walks. I know the lights are bright, because I've had cars half a mile away hit their high beam headlights to see what the flashy light thing ahead of them was. Another use I could see would be to mark the location of a mailbox or driveway on a dark road when you're expecting visitors who don't know where the house is. Someone might come along and steal the light, but the lights aren't expensive, and you have a box of nine.