LaRoo Light Up Dog Collar with Nylon Stickers, Universal Glowing Collar Accessories for Leash Harness, Silicone Waterproof Dog LED Flashing Collar Night Outdoor Safety

Love this, I strap to the front of harness
This product the only of its kind, and was actually what I was looking for! I didn’t want to put an additional collar on my dog while she plays at the dog park at night and instead wanted something I could strap to her harness. The light is bright, with two settings (no flash and flashing), the button it large and easy to push, but not so easy that other dogs change the setting while playing.
My only gripe is how delicate the velcro is. So sometimes it does get pulled off by dogs who play extra rough. The velcro is very soft/fine and the strap is rather thin. I have to take this on/off during the day to night, and it also gets dirty, so the effectiveness of the velcro diminishes. If the product is set in place and not constantly removed, I don’t think this would be as much of a problem. I do think that if the straps were slightly longer, it would give more to attach to and help secure it more on a variety of sized harnesses and leashes.
It’s a little unclear how long the battery will last, as the packaging and this product page vary.

Not the sturdiest light up collars, but good for the price and very bright
I have a couple active dogs who like to roam a bit – They have collar-based GPS trackers but I like having bright LED collars to keep an eye on them at night without having to pull out the phone. Since the GPS is built into the collar, I like to use the quick-connect lights rather than replacing the entire collar.
These lights are very bright and work well, but they aren’t super sturdy. I would estimate they last 3ish months before needing to be replaced or start to fail. One of mine right now still works but had a loose wire I had to clip so it’s only a matter of time before it needs to be replaced. But at thirteen bucks, it’s a good price/performance trade-off.
I had one that arrived DOA and the support was super responsive, so if you want to deal with product returns, it’s a no brainer.

Sucked for 2 months then died
I ended up having to safety pin this to my dog’s leash because the velcro was such garbage that it either bunched up or fell off. After 2 months of being a pain I noticed it had gotten dramatically dimmer and then the next day it didn’t work at all. The battery was supposed to last much longer.
I don’t recommend this product. I’d just buy a light up leash or collar instead.

Almost Perfect
I bought this to use on early morning walks with my black lab. I haven’t found a use for the strobing feature, but otherwise, I really like this light. It’s visible, but the orange isn’t as harsh as some of the other color choices. The one thing I would change is the attachments. They are very fine velcro and don’t stay attached in the long-run. I ended up replacing them with zip ties instead. A sturdier Velcro would’ve been perfect.