USB rechargeable breast pump with a maximum capacity of 210ml. - Set includes: Breast pump, storage bag, charging cable (USB type-C), nipple set, nipple cover, nipple ring - Maximum capacity: 210ml - Material: Polypropylene Thank you for viewing. This is an electric breast pump. I removed the outer packaging after purchasing it on Amazon, but I have not opened the inner packaging at all. Since it is a new, unused item, I have not checked the charging or operation. Please purchase only if you understand that it has been in someone's possession once.