Medela’s Swing Flex™ breast pump has been reborn as Solo™. Solo™ is a compact, effective, and easy-to-use single electric breast pump with a rechargeable built-in battery, 2-phase Expression technology, and PersonalFit Flex™ breast shield. At a glance: Solo Single Electric Breast Pump Easy to use: 4-button intuitive interface and 9 pre-programmed settings. Easy to assemble and clean thanks to few parts. Lightweight and compact design. 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. 2-Phase Expression® technology mimics your baby's natural sucking rhythm1, 2. PersonalFit Flex™ breast shield for increased comfort and 11.8% more milk3. Noticeably quieter compared to the previous generation, with less than 45 dB at the Maximum Expression Level. Closed system prevents breast milk from entering the tubing.