Harmony is the most efficient and reliable manual breastpump available that allows you to mimic your baby's natural nursing rhythm. Using the same revolutionary 2-Phase Expression Technology found in Medela hospital grade pumps, you can express more milk in less time. Harmony complements the breastfeeding experience to maximize the bonding time between baby and mom providing you with peace of mind that your baby will continue to receive the life enhancing benefits of breastfeeding and breastmilk.