Brand new Swing Maxi Double Electric Breast Pump. Double pumping for up to 18% more milk in less time 1. 2-Phase Expression™ technology mimics your baby's natural sucking rhythm 2, 3. PersonalFit Flex™ breast shield for increased comfort and 11% more milk 4. 2 sizes included. Improved mobility: built-in rechargeable battery for up to 6 pumping sessions on one full charge. Faster charging with USB type C port, compared to micro-USB port. Easy to use: 4-button intuitive interface and 9 pre-programmed settings. Easy to assemble and clean thanks to few parts. Noticeably quieter compared to the previous generation, only 45 dB at the Maximum Vacuum Level. Closed system prevents breast milk from entering the tubing.