Rechargeable Battery Equipped with an 1100 mAh rechargeable battery, the breast pump can be used for about 120 minutes, which equals 4-6 times after fully charged. And the LCD display also can shows the remaining battery. You don’t have to worry about the-battery. Size Selection There are 2pcs flanges in the package, which are 19mm and 22mm. You can use measuring tool to measure nipple diameter and choose the corresponding flange to help breast milk flow smoothly.
