I have the PP-4 which is an older or newer version of the same pump, I'm not sure though, it seems like they change the nomenclature of their pumps daily haha
It's a good little pump IMO. It does make a little noise but you have to be in a silent room to hear it and even then my skimmer is louder than the powerhead. I use the pulse feature and it creates a good wavemaking effect in my IM Nano 20. Don't expect much from the user manual, it's littered with Chinese to English translation mistakes and also provides little information on what the overall features actually do. For the price though, you can't beat how many features you do get and the fact that you can link multiple units wirelessly is pretty cool too.