Wearable design, freeing your hands for housework, playing with your lovely baby, and more, very time-saving, just enjoy efficient milk pumping. 3 modes for option: massage mode, expression mode, mixed mode; 9 levels of suction adjustable, always choose the right one for more comfortable milk pumping. The memory function will remember the settings used last time. With overflow-proof and backflow-resistant design, preventing milk from wasting and contamination; integrated design, no tubes, easy for assembly and using; made from high-quality ABS material, friendly to skin, easy to clean. Below 50dB low noise, just like people talking at a very low noise, won't disturbe the sleeping baby; built-in large capacity battery, can be used for 2-4 times after fully charged; and it is easy to get charged from power bank, AC adapter, laptop, and more. 2 packs one set for both breasts, milk pumping is more efficient; compact size and light weight, comes with a carrying bag, convenient for using at home, during travel, etc.