Electronic Portable Breast Pump Li-ion Rechargeable Battery with USB Cable,Safe designed for your comfort,With unique milk gas isolation technology to prevent the milk from contacting with the main unit to ensure that the breast milk is clean during breast pumping,Fifteen levels suction adjustment for the conform of the mum,Digital LED display,Low noise, low vibration, more comfortable to use,The unique automatic suction and release cycle fully simulates the baby’s sucking action,With ergonomic massage cushion, it is more comfortable and painless,Easy to operate and clean