This works well. It has come apart a few times, but pops back together relatively easily.

This mirror is being used to monitor those who may sneak up behind me while I'm browsing the intern--er, working. The clip is fairly heavy duty, and the mirror is a fair size, bigger than other desk/cubicle mirrors I've seen. I've attached it to the bottom of my cube shelf and positioned the mirror to face the cube entrance, and there is a good deal of versatility in movement but the movement is not as "firm" as I would like. Not to say that it will droop, it is secure but it is not as flexible as I would prefer. So far so good, will update if it starts to move around. Also, not sure what others are saying, it does have a rounded effect (it's a rounded mirror) but I have no distortion whatsoever.

Attached picture to show use and size comparison with a dollar bill, as I've read reviews from people who are surprised at how big the mirror is. It's a fairly big mirror.

So, it's been said by every review, but yes, this thing is big. The pictures of people having this mounted to their monitors are honestly comical. I had originally bought a smaller (2.5" x 3") monitor mirror which would've worked perfectly... BUT the problem is that I have a somewhat unusual setup. Most people probably have walls surrounding themselves at their office for 3 sides: 2 sides + front, but the opening is directly behind them. If that's your case, I'm sure a monitor mirror (I picked the top result for "monitor mirror") would be perfect as all you really need is to be able to glance and see directly behind you.

My problem is that I have my blind spot to my left. In addition, I have a cabinet to my left that prevents easy viewing access. So, this device works perfectly as I mounted it on a small cubicle wall (clamps work great) that's about 7 feet in front of me and have it angled to out to my left. THAT is really what this is designed for. It should be noted that it didn't look like the clamp was big enough to clamp onto my desk (its too thick) but that's fine for me.

If you need something big and don't mind having the bevel around it as well, this should work great. If you don't need something that big, then go with a monitor mirror.

Do you work in a warren of cubbies? Does your computer face away from the entrance to your cave, so you find that people come up behind you? Nothing worse! This mirror is my solution. I have clipped it next to my computer monitor (it would also clip TO the monitor, had I wanted it there), and now I can see who is coming up behind me. This isn't a small thing - it's a full hand-span across! I could have done, I think, with a five inch diameter, but the seven inch was the smallest available.

The mirror is convex, but not so curved that it distorts images. The optics are quite clear, too. All in all, just what I needed.

Works as intended. Easy to use. Large surface area. Doesn't feel flimsy