The ‘let-down’ phase lasts for two minutes, unless mum decides to switch to ‘expression’ phase prior to this by using the ‘phase’ toggle button. Once the pump has switched to the second phase – ‘expression’, the pump will be at the following settings: Pumping Style – 2 leaves; and suction setting – level 3. Mum can then select her preferred pumping style and increase or decrease the suction level.