The Medela Swing Flex Electric 2 Phase Breast Pump is a single electric breast pump featuring innovative 2-Phase Expression technology that mimics a baby's natural nursing rhythm. With its PersonalFit Flex breast shield and adjustable vacuum levels, it offers efficient and comfortable pumping for nursing mothers. Key features: • 2-Phase Expression technology mimics natural nursing patterns • PersonalFit Flex breast shield with 105° angle for better comfort • 11 adjustable vacuum levels for customized pumping • Compact and lightweight portable design • Easy to clean and assemble • Can be powered by batteries or AC adapter • Includes bottle and stand for convenient collection The pump automatically switches from stimulation mode to expression mode after 2 minutes, though mothers can manually switch modes when milk begins to flow. The PersonalFit Flex breast shield is clinically proven to extract 11% more milk compared to standard shields. The pump comes with everything needed to begin expressing, including bottle, stand, and power options for flexibility of use.