Hand vacuum cleaners work to suck the dust out too.

Personal experience, i have an air-compressor 100 PSI 2 gallon.

Fill it up, set to 60psi.

Have nozzle on for precise air blowing power about 6 inches away from what you're dusting.
(Upper right and lower left parts together)

Use the entire tank. Your PC will be much happier.

I've never used such a thing for cleaning my computer (self built) - have had PCs for 30+ years

I've never had any issues, current configuration has been running steady for about 10 years, once in a great while I'll open up the tower and blow out some dust with my lung power and use some q-tips to get dust from around the fans

While lung power can be used... you quickly feel like you're hyperventilating... :P

But it's incredibly hard to get to the nooks and crannies, cleaning your power supply out, etc. Using compressed air is far easier and reliable.

Although it does depend on your computer. A computer that doesn't generate any real heat (the 8bit 6502 systems) dust is a non-issue. Otherwise in more modern systems dust traps heat.

I only have an issue with paying $5 for a can of air, while $30 will give you a halfway decent compressor that you can reuse multiple times.

Although if you want REAL clean parts. CRC's delicate parts cleaner is AWESOME.

I use datavac electric duster, works great.

I used to play the sousaphone, my lung power is pretty good, and there's nothing big that needs done that has me doing it for any extended time, just some blows and I'm done

never worried about the nooks and crannies and getting every little bit, it's never seemed to matter

When i mention those, i am meaning more the heat sinks and the like, where you might have to disassemble part of the PC to get to it otherwise. All the little places otherwise i would work on as the PSI goes under 25 and using up what's left of the tank before it's empty.

Pipe cleaners are good for stubborn dust stuck in small metal places.

Metro mentions that there is 220V/50Hz version available too so I guess searching specifically for 220V version from amazon.de or amazon.com might give some hits. :)
There is only one UK reseller they mention in "Where to buy - International"-page and that one only sells tennis-stuff according to their page so that's bit odd. X-D

Yeah Ancient-Red-Dragon mentioned same thing about that "ESD"-version at post 11

what's the advantage to doing it though?

https://www.amazon.co.uk/dp/B003BZCOKK/

I did that once in college on a half million dollar mini. They told me next time I did it, they would expel me.

Your breath has moisture and may ruin and/ or sort out parts.
The issue with that, again with the mini/main frames, is if something does come loose, you don't know from where it came from.

Kind of iffy with the idea of bringing a power machine that's going to have a charge near computer parts as well.
I wouldn't go near something like a motherboard with one. Scrape hazard.

I use pipe cleaners or similar to get some hard sticking dirt off fan blades and some heat sinks, never any electronic stuff.

I use a Milwaukee M18 Airblower for years on my pc. 100 CFM (160 MPH) it has enough power to rip the hardest sticking dust off of fans and everything else. it's outstanding tbh.

https://www.milwaukeetool.com/power-tools/cordless/0884-20