For a no brand item, this pump definitely does the job. I initially bought one to try out first, end up buying a second one once i know that this product works, pumps the same amount of milk as my spectra but more convenient as it is cordless. I use it mainly when I'm out and about, would bring it along to pump in my Car. Last about 4 pumps per full charge. Only thing is TO MAKE SURE YOU SET UP THE PARTS PROPERLY for it to work well. Definitely recommend.