I was considering options for road hazard warnings for the cars in our family (5) and had considered actual road flares. But they are way too expensive and they're gone in just a short amount of time. I used to use them in years past, but the expense was just getting to be too much for an expendable item. We also have the reflective warning triangles but the case of three tend to be bulky and difficult to store in smaller cars.Started researching other options and came across these. Very impressed with the overall build and functionality of these. Easy to keep handy in our cars for quick use and with six of them in each zipper case, I believe these are more than adequate to help warn other drivers if we were to have a breakdown on the road.As stated in the product description, there are 9 different warning options but frankly only the first 5 settings are really effective to warn others. The last 4 settings are more for general warning in a static environment (steady bright, low light steady and one or two lights pointing in one direction, steady non-blinking). But the three LED bright light on the top of each unit would be exceptionally useful if you don't have a flashlight handy.Also, I like the switch's functionality. You can turn the unit off at any point with a single long hold on the button. The units' construction seems to be very solid, and although I didn't test them, they appeared to be made well enough that they should be pretty water-resistant.

Uses 3 AAA batteries. I used lithium to handle cold and heat in car/truck boxes. Very bright in daylight. In darkness will be seen from quite a distance.

We travel a lot back and forth from the lake on the weekends and there are places with nothing around. This will make us feel safe on the road if we need to use it. I was pleased with the product that arrived, although we haven't used it yet. I recommend everyone buy this product.

A little smaller than expected but seems great. There is a retractable hook and magnet on the back. It looks like it will be rain-proof without any problems as long as you tightly seal/screw it in. Lots of different settings for the lights. Flashing, solid, etc. Compact and with a little carrying case to toss it in the trunk overall happy. I will update review if I ever find out they suck. Takes 3 AAA batteries per little "flare" and it comes with 3 lights/"flares". The light is orange.

These things are great. I use them when the kids are out playing in the road.