Watertight? - NOT BY A LONG SHOT!! Durable? - LASTED ONE MONTH!! The 2 of these "dog tested" lights cost me $40 and proved to be no better than the pieces of crap I can buy for $5 which last about the same amount of time! How disappointing...crap is crap no matter how much you pay for it! One star only because I have to!!

We bought this for our black dog so she was visible when we let her out at night to go to the bathroom, and for the night time walks. She loves to swim and has taken many swims while The Beacon was still on her collar. Didn't cross my mind to take it off, but it filled with water and shorted out. We got all the water out and let it dry out, but it still does not work properly. I loved it, and would recommend it to anyone, but make sure you take it off before they jump in the river!

This is a great little light for night time dog activities. The ring is not very strong, but I like the fact that it would open up if it got caught on something.

The size and quality of the Beacon make it the perfect fit for our evening walks. A black dog, at night with this beacon attached to the orange track jacket keeps us more than visible. The Beacon has been very reliable.

Exactly what we needed! Durable with three bright light settings. Stands up to ruff dog play and rainy Seattle walks/runs. Very well made and worth every penny.

I love this product...so much so that I am on my 3rd one since the first two were lost. There should definitely be an option to clip it on and off the collar in a more secure but removable way than the plastic clip or the O ring. Aside from that much nicer than the cheap ones I have gotten at the pet store. A well made product......

Cheesy metal ring useless. Dog ran as ring opened up. Lucky to get him back. Buton not identifiable enough. Used "white out" to paint it white. Works well but othr than metal cheap ring- waaaaaaaay overpriced when including shipping. Illuminates well.

this is the only light for dogs that is water tight. at first i didnt like that it faced up but its bright and visible. i also use bicycle led lights which are also water tight and get him noticed

I love using this light for my dog at night. It is wonderful when we let her off leash at the dog park or even in our yard so we can easily track her. It is great at night when we go for walks and she is easily seen by traffic. Many people comment on how great a product it is. Only downside is the clasp is tough to place on and off her coat. It does come off sometimes too when she plays with other dogs.

Painted button white so human can find it to use. Permantely attached to D-ring on collar. Very small & cheap attachment ring. Bought larger heavier steel ring used for 1 inch key rings Should be on sweivel attachment. Too expensive for this lone defect and cheap , yet most important, element of product. Yes, I am buying 1 more for added safety factor to collar & animal.

I must have a new version that attaches to the collar with a ring..won't come off. Great to locate my pup at night and use for safety when walking at night with the dogs

I very much liked the beacon for keeping track of my dog in low light conditions, but the device will consistently come off if my dog plays with other dogs, run through brush, or rubs againsts an object to itch him self. The product would be ideal if the clasp locked some how to prevent slipping off. I'll give it 3 stars because it's pretty expensive to keep losing!

Have used it with our Italian Greyhound at dusk, he's very fast and easy to lose in the dark, great product, i also like that it has the 2 modes, blinking and steady light. I would definitelly recommend it for owners who let their dogs off leash on night walks.

I have been looking for a safety light for the boys for awhile. Overall I'm surprised no one has made a really rugged safety light for dogs but this comes as close as there is for now. I purchased my at REI. It has a plastic clip that will not last and it does not have a quick release ring for the collar ring. Light is bright and it has a blink, rapid blink, and a constant mode.

This was exactly what we needed. We have a large fenced backyard and at night sometimes it's very hard to see our border terrier . Now we can see her even if her nose takes her to the FAR end of our property!!

I love the light...but we also lost the first one and had to replace it pretty quickly. I would suggest adding a clip that quickly hooks onto the tag ring on the collar and and can be removed when you come in! This would prevent what happened to us, which was slipping off the collar! Overall great product :)

I bought this to keep my dogs in sight when they play at dusk/night. Both lights fell off while they were running before I had a chance to turn the lights on - quickest waste of $34.

Works great. We walk at night and this light is bright enough to keep us from getting ran over. We have received several good comments from neighbors. Battery last a long time. I bought 2, one for each of us!

We walk city streets when the sun is down & thanks to The Beacon we feel very safe. People love the lights on the dogs & we love the fact they can see the dogs from far way, particularly the small dark dog. Thank you Ruffwear for the illumination