"Features 2-Phase Expression pumping that mimics baby's nursing rhythm. It pumps in two distinct modes: Stimulation & Expression which help to make expressing your milk a quick process.

With the specially designed handle, you start off doing short fast expressions which stimulates the milk let down, just like how a baby sucks. Then when you feel milk letdown and it starts to spray in the bottle, you turn the handle around and the pump goes into a longer slower motion. Designed for faster "let-down" and milk flow Ergonomic swivel handle for easy pumping"

Actually found this more convenient than the electric pump. Very easy to use. New valve. Includes the calma teat.