The First Years miPump single-breast pump offers effective milk expression to help you schedule your baby"s feeding time. It comes with a flexi-fit breast shield for a custom fit. With 8 suction pressure levels, it provides comfortable pumping. This breast pump offers noise-less operation for private use and is BPA-free for safety. It has a compact design and comes with a tote bag for easy carriage. It requires 4AA battery for operation but can be charged with the included AC adapter too.