The USB rechargeable power unit provides over 90 minutes of power (with full charge) to give mums the freedom to express anywhere. The adjustable settings allow you to fully control the level of expressing needed during each pumping session. With 5 massage and 9 express settings, mums can choose the breast pump option that’s most comfortable for them at different stages of their breastfeeding experience. You can use the pump as a single or double electric pump and with just the push of a button, you can express from one side or both. The hygienic closed system makes sure breast milk only goes into the bottle with no backflow into the tubes. All components are BPA/BPS fre.