The WatchYrBack GREY 12 inch Convex Mirror seems to hold up pretty well for outdoor use. The manufacturer says it's weather-resistant, so it should be able to handle things like rain, sunshine, and changing temperatures. This makes it a solid choice for places that are exposed to the elements, whether for homes or businesses like driveways or retail spots.

The mirror's made with a strong grey frame and high-quality acrylic, which means you get clear reflections without much distortion. Plus, acrylic's less likely to break than glass, which is great if the mirror is in an area where it could get hit.

Setting up this mirror is said to be pretty easy. Our research shows that it comes with all the necessary mounting bits—like stainless steel screws—that work on different surfaces such as wood, vinyl, or concrete. So that's a nice touch that could save you a trip to the hardware store.

A lot of folks have pointed out that the mirror gives a nice, wide view, which can help a lot with safety and visibility, especially in tricky spots like blind corners. The 12-inch size is recommended for areas where you'll be about 15 feet from the mirror, which lines up with the manufacturer's guidelines.

Just remember though, like with all convex mirrors, they're better for seeing things up close rather than far away. So if you’re looking for something to keep an eye on distant traffic, this might not be the perfect choice.

All in all, if you need a durable mirror for improving visibility at closer ranges and want something easy to set up, the WatchYrBack GREY 12 inch model seems to be a good pick based on our research.

Just keep its limitations in mind, and it should be a helpful safety addition.