On/off switch is impossible to use. Fortunately, the Ruffwear beacon Steve sells on the site is a great product, and was replaced by him after I wrote concerning my disappointment with this product.

The locator beacon is a great product for helping to track your dog at night or low light conditions. I would highly recommend this product to anyone training dogs at night, or if you want to keep track of your pet when it goes out at night. My only complaint with the product is that it is a little hard to turn off. The small on/off button is not easy to use, especially in wet conditions. Overall a great product! I would recommend the green, red, blue or white lights to anyone that is buying one of these products. The amber/yellow light is not as bright as the other models.

Light is great, very bright, waterproof, durable. Does not fit on large (thick) dog collar, so need to use the included strap. Still okay, but would be better if it fit on the collar. Switch is a bit difficult to use (push button very small). Need to use an object to push it and hold it in. However, this keeps it from being turned off accidentally. Would buy again. Good value for the price, and the best I've seen.

I ordered 4 lights. The 3 that work are awesome, but the 4th light never worked from the time I took it out of the package. I tried new batteries, and still had no luck with it. A new one is supposed to be on its way to me now, so hopefully it works!

Very difficult to turn on/off.

The switch to turn it on/off is way too small.... Otherwise it is good light.

Best item I ever purchased... Never have to look for them on their night run. They stick out like a fire truck! Have two dogs...use one blue and one orange.

I have an older one I like better. The new one needs something pointed to operate. The old one you just turn to operate.

It works, but the button to operate its various functions is small & a pain to use. Especially when on the dog. I much prefer the Tracker flash-light, as it's a more simplistic design, quick and easy to use (even with gloves on).

Only problem I have with this product is the way it has to be turned off and on, or changed from flashing to solid. Not to easy. Other than that it does it's job as intended. No losing site of your dog in the dark when this light is on. Great for my GSP as I let him out of his kennel to run the yard (which is very large) before work, and one look out the window and there is no wondering where he went.

These are really nifty! They really are waterproof. We have 6 dogs, and when airing at night we can keep track of everybody. We did find each dog needed 2 lights on opposite sides of their collars so you still see the dog no matter the collar's orientation. Depending on what material your collars are made of, they may slide, hence you might what to rivet them in place. In the blink mode, the batteries last an amazingly long time. Only fault is that we found the red, yellow and orange ones are very difficult to turn and off. You twist clockwise to turn on, and vice versa, but the colored domes are VERY tight in these colors, and we've gone through several lights of each color and this seems to be universal, no matter what the source of the light is. Other than helping to keep track of everybody, they are also great safety at night in case someone gets out in the road or a dog gets injured, you can find them more rapidly.

I would have to see it in orange

This thing is very bright and easy to see.

This light is so bright! Excellent for early morning outings and staying out later.

I use the beacon on both dogs. It allows me to see them at night when we are out walking or feeding horses. I have noticed that the green is brighter than the red or orange.

Works well, but only had it a few months. Definitely bright enough. I use 2 on the collar.