Wearable Electric Wireless Hands-Free Breast Pump With 3 Modes And 9 Levels Suction, Smart LCD Display, Massage And Pumping

3 Modes Meet the Needs of Different Mothers Expression Mode : Very strong suction strength and slow frequency. Dual-frequency Mode : Weak suction strength and quick frequency 2-in-1 Mode : Different Modes for Moms, circle of gentle massage and strong pumping, painless and comfortable. Warm Tips: Before use, make sure that the silicone fits of the pump are properly installed, lean forward 45 degrees, and keep the milk container upright. If weakness in suction force may due to insufficient airtightness you should do these checking : Please check if the duckbill valve is broken and if the transparent rubber ring at both ends of the straw has not fallen off. Or the suction bowl is damaged or the size does not fit. Please be charged full to keep the strong suction milk. Also, you can adjust the levels to comfort suction