I have gained this breast pump after a Proven hand pump from a reputable manufacturer as total flop has. Hand pump I had rather a cramp in the Hand as milk, but with this pump has a ratzfatz considerable amount of milk together. I find this device also not noisy at all. I am looking away when pumping and it does not bother.
The only thing I would have to complain about would be that you a could enclose brief explanation for suckers. This system I did not know and had to google it first.