This hospital-grade breast pump is fully suited for very frequent use. Its built-in, rechargeable battery allows you to pump on the go and in situations where a power outlet may not always be available. It also has a handy night light. In let-down mode, the S1 pumps at 70 cycles per minute, and you can choose between five different suction strength settings. In expression mode, speed and strength can be adjusted individually.

The S1's expression mode gives you five-speed settings - ranging from 38 to 54 cycles per minute - to choose from, and 12 different strength settings. The pump's maximum strength is 320mmHg. The S1 comes equipped with two sets of attachments (bottles, tubing, backflow protectors, breast shields, and valves), allowing you to use it for single or double pumping. Double pumping saves time and helps to increase production, while single pumping can easily be done on one side while feeding baby on the other. The back-flow protectors ensure that breast milk particles will not cause growth of mould and contamination in the motor unit. All attachments that come into contact with your milk, are BPA free. The S1 comes with a one-year quality guarantee.