Medela - Mini Electric Breast Pump Medela Mini Electric Breast Pump is light weight and compact in design. It is easy to use either at home or outside in case you are traveling. The pump comes with a transformer and can be operated on the mains as well as battery. Adjustable vacuum settings to ensure optimum comfort. Features: Electric and Battery powered options  Small and Compact – for convenient use at home or on the go Adjustable vacuum levels Easy to assemble use and clean Single pumping