Highlights - Boboduck breast pump's suction is very soft and painless. - Using 100% food grade material and medical silicone, no bpa. - Help mothers overcome problems of flat or inverted nipples to breastfeed successfully. - Massage first and then suck breast, fully suck breast milk.Increase breast milk volume. Features - 9 levels of 3 modes can be set freely（Massage/Lactation/Pumping) - All in one design, easy to carry. It is same as an weight of apple. - Anti-Backflow design which separates the milk and air, ensures milk's hygiene. - Soft silicone breast shield perfectly fit the shape of mom's breasts, without pain. - Petal design make the breast pad into massage petal pad is improve breast fit and comfort. - Silent design without noise while working （40 DB） - Memory function : Remember the suction used last time（Upgrade verison ) - USB charging .Can charge the device with powerbanks or handphone adapter. Specification Material：Silicone, PP/PPSU, ABS Bottle capacity：160 ml / 6 oz Nipple hole size：24 mm Use time after fully charged: 3 hours Charging time: 3 - 4 hours to fully charge Dimensions ：150 x 195 x 88 mm / 5.9 x 7.4 x 3.4 inches