Freestyle flex breast pump Compact, light and portable-easy to carry wherever you go Built-in rechargeable battery-so you can express anywhere - no need to search for an outlet USB port for powering up on the go Connects to free Medela Family app via bluetooth Medela PersonalFit Flex breast shields for your comfort and increased milk flow Closed system- prevents breast milk from entering the tubing Full support kit –It also comes with all you need to collect and store your breast milk, including a carry bag and a cooler bag to help keep breast milk fresh if pumping away from home.