So, at the end of the day, it's a can of air. There's not really much to comment about it, other then the fact that when you press the button, pressurised air comes out of the nozzle. Simple.
The only thing that annoyed me though, is the fact that I did not get a long nozzle with it. I'm not sure whether that is a packaging issue, or whether it simply does not come with one (though the picture is misleading if it doesn't), but I thankfully wasn't hampered as I had one from an earlier, different can I'd used.
All in all, it did what it meant to.