The Harmony is the only manual breastpump to feature Medela’s unique 2-Phase Expression pumping, mimicking the baby’s nursing rhythm by pumping in two distinct modes for unsurpassed comfort, naturalness and efficiency.This manual breastpump is ideal for mothers who only express milk occasionally and do not want to miss the usual feel of their baby.Also features fewer parts than other manual breastpumps and an ergonomic swivel handle.