Medela Swing Maxi Double Electric Breast PumpMedela Swing Maxi Double Electric Breast Pump The Medela Swing Maxi is a double electric breast pump designed to mimic a babys natural sucking pattern using 2 Phase Expression technology, simulating the experience of a baby at the breast with two modes: Stimulation Mode: Short, rapid suction to stimulate milk flow. Expression Mode: Longer, slower suction for milk expression once milk starts flowing. The pump automatically begins with a 1 minute