This gadget set is a beneficial for new moms. It includes a swing maxi motor unit, two bottles with lids, two bottle stands, two connectors, breast shields, a USB charging cable, an adaptor and an instruction booklet. The pump is designed with a research-based 2-phase Expression Technology to produce more milk in less time for more efficient expression and maximum flow. It has a four-button intuitive interface and nine pre-programmed levels. The improved mobility allows you to be mobile while pumping, and the closed system prevents milk from entering the tubing when using connectors. This set is a thoughtful investment.