I buy this pump because the hospital say it be a great brand to buy . I be ready to throw it out the window . it start out you set you speed which be fine , but then part way through pump it will change the setting on you to either way to hard and it hurt very much , my nipple have come away raw from this dang machine , or it will go too light to the point where no milk even come out . it also do not pump both side equally . it will do the side that I put the main pump on -lrb- the one that you set it with -rrb- really good but then the other side wont hardly do it at all . I can be at 3 ounce on the one side and only have like 1\/2 a ounce on the other . I would never buy this stupid machine again . it be not worth the money !!!! by the way this be Jared 's wife : -rrb-