Product Information:- Made of BPA-free material, safe to use. Closed system to ensure the purity of breast milk for your baby. - Supports massage and breast pump 2 modes, with adjustable 4 levels strength. It will automatically close after 30 minutes of work.- The bottle body is non-slip design and will not slip off easily when used.- USB interface, link charging treasure, computer, plug can be used.- It is a safe and complete complete solution for capturing, storing and feeding breast milk at any time during breastfeeding. Packing list:Nipple x 1USB cable x 1Trachea x 2Pump body x 1Connection pipe x 1Milk Bottle x 2User Manual x 1 Tips: Before using this Electric Breast Pump,please read the user's manual carefully and use it accordingly. Please keep the user's manual property for reference at any time.