Feels just like baby sucking

I’ve been using Medela’s pump for almost a year now, it suction mimic a baby’s suction. There are times where I got milk duct block, using it in the hard mode for 5-7 mins will always unblock it and I would continue to pump normally. It comes with a wire or battery so, if wanna hand frees to use it just pop on a hand frees bra and you are good to go.