Medela Breast Pump Swing MaxiMedela Breast Pump Swing Maxi Features 2 Phase Expression technology, mimicking a babys natural sucking pattern by dividing operation into two modes: Stimulation Mode: Gently stimulates the breast with short, rapid suction, simulating massage to trigger milk let down. Expression Mode: Provides longer, softer suction similar to a baby feeding from the breast, used once milk begins to flow. The pump starts with a 2 minute stimulation phase, then