2 Gears 1-9 Strong Suction; Massage And Pumping Can Be Alternated Freely To Meet The Needs Of Pumping In Different Periods. Free Choice Of Single And Double, Intelligent Control. The Body Is Small, Easy To Carry And Store. The Touch Screen Makes It Easier And Very Quiet, For Example In Silent Mode. The Petals Suck, Just Like A Baby Sucks. Except For The Machine, Boiling Water Disinfects All Parts Effectively. Convenient Usb Charging Cable, Easier For Mothers