Thank you for viewing. This is an electric breast pump that can be easily used with switch operation. It works with a dedicated adapter. It can also be used with dry cell batteries (2 AA alkaline batteries) (batteries not included). I received it from someone, but I switched to formula early on, so I hardly used it. It is in relatively clean condition, but one part (the large size of the breast shield) has a slight yellowing, so I've marked it as having some scratches and dirt (photo 3, bottom of photo 4). The 160ml milk bottle (glass bottle) from the Mother's Touch brand can be attached if the nipple is removed (the ring is yellow). Please send me a message if you need it. (If there is no message, I will send it without it.) There are no missing parts other than the above. Operation has also been confirmed. Please see the photos for the condition of the other items. The yellow circle in photo 2 and photo 5 are the separately sold storage bottle caps. These caps allow for horizontal storage in the refrigerator, but they cannot be used with glass bottles because they may break when heated in a water bath. - Brand: Pigeon - Model Name: Electric Breast Pump - Included Items: Power adapter, all parts - Features: Easy operation with a switch