When a mother wants to express milk regularly and over an extended period of time, the Calypso breastpump is the ideal choice. The pump is very quiet to operate, so milk can be expressed comfortably and discreetly. Nevertheless, the suction strength is incredibly powerful. As the breastpump is so quiet and gentle, you can do something else at the same time, such as speaking on the telephone. The Calypso fulfills high standards of hygiene and safety and provides excellent protection for breastfeeding mothers. AA battery function when moms need to pump away from electrical power. Other outstanding features include its attractive and compact design.