Medela Symphony Hospital Grade Breast Pump (Rechargeable Battery)

2-Phase Expression® technology: Designed to mimic a baby's natural nursing rhythm.  Convenient: Single or double pumping.  Two separate, independent membrane units: Allows switching between single and double pumping by simply applying or removing the second collection kit to the breast. Let-down button: Moms can easily return to stimulation by pressing the let-down button. Initiate and maintain milk supply: If direct breastfeeding is not possible, as well as collect breast milk at work or during other absences from the baby.  Hospital grade (multi-user): The pump's kit is separate from the pumping mechanism and protected from overflow by a specially designed membrane. Warranty: 3 years  Battery: Rechargeable