"CIPA 49102 2"" HotSpots Round Stick-On Convex Mirror", black

Replaced my old, worn ones (also 3”) with these. Didn’t think it’d matter very much but these have a black frame around them which actually assists in locating them and in staying focused on them when using them. Knit-lucky, I know, but there’s SO many of the same out there to choose from, it’s the little things that differentiate. Pleased also they have a generous double-stick pad on the back. Pretty much covers the entire back side, not sone nickel-sized excuse for an applicator.

These mirror are super nice and super affordable, close to 4", if you want to see what is in the blind spot in your vehicle while driving, this mirror is the good one, it might cover half oy your side mirror but this one will provide a great angle of the road. I have used the 2" which is a toy and then I got the 3" which is a lot better but this one is the best. Besides that, the seller offer fast delivery, which is awesome. Seller and mirror, Highly recommended

The product does what it's supposed to. Although the silvering, is poor quality

util

Both my cars have blind spot indicators. They’re small and hard to see on a sunny day, but work fine.I got used to using these mirrors before they had indicators and thought it was superior. For one thing, most indicators don’t beep unless you put the turn signal on. They also don’t show up until the guy is right up on your tail. I like the mirror better.This one is big and will cover a substantial portion of the mirror. I don’t care. I’m not reading the newspaper through the mirror just want to see other vehicles. The big ones are better for that.You can’t have too many safety features, especially these days.

After two weeks, one of the mirrors began to accumulate water inside it. It appears that the mirror is delaminating from the inside and accumulating water. See Picture!!DONT BUY AND RUN AWAY!!!

I ordered this because I want to know when someone walks up behind me in my cubicle. I wasn't sure what size to get, but I went with the 3" model and that seems to be about right (see customer images for photo). If it were any larger it would look a little awkward on my 20" monitor, and I think if it were much smaller it would be hard to see anything in it.The sticker on the back works great, although fastening it this way does cover up a tiny corner of the screen. Chances are you're familiar enough with your computer to know what's under there anyway (in Chrome, it's the "Back" button), but if that's going to bother you then you might want to find a mirror with a clip mount.Overall, a good product and significantly cheaper than similar "Computer rearview mirrors" on Amazon.PS - A few reviewers said that they received theirs scratched. Mine was in perfect condition, and it's hard to imagine how it could have been scratched in the packaging I received it in. Either they are using new, better packaging or some of them are already scratched when packaged.

I bought this mirror for the sole purpose of being able to see what's behind me while sitting at my desk. This mirror is absolutely perfect for that. Given it's larger size in comparison to other blind spot mirrors, I am able to see everything - the field of view is excellent. No more sneaking up behind me!