So it is a pair One for each Breast. It was used for only 6 months. It is still as good as new. The rechargeable part is plugged to electricity to charge it. It uses a USB cord. When fully charged, it can last for 2 rounds of pumping. It has a timer, the maximum rane is 30minutes. It has other accessories for the milk compartment incase one part is worn out. Singe breast pump is 30K, the pair is 60K.