Features:Invisible Wearable Breast PumpThe hs free breast pump can be wear under nursing bra well for more convenient pumping. Moms can pump breast milk anytime anywhere, such as home, office, outdoors, driving, etc.2 Modes \u0026 5 Suction LevelsThe wearable breast pump supports 2 modes 5 suction levels. It is Stimulation Mode when power on, automatically switches into Expression Mode after 2 min or press the mode button to switch. Mothers can find a suitable suction level easily for efficient pumping.Built-in Battery \u0026 Low Noise WorkingBuilt in rechargeable battery, long working time can be charged by the included USB cable quickly. The sound of the wearable breast pump is less than 50dB during working, which will not disturb your baby or get others attention.Anti-Backflow \u0026 No LeakageAdopts anti-backflow design a seal system, wearable breast pump can prevent the breast milk from being contaminated leakage. With a 150ml milk bottle for convenient breastmilk storage.No Pain \u0026 Fits WellComes with 25mm breast shield 17mm\/21mm flange inserts, suitable for different breast size, made of soft silicone material, which will not cause pain maintain a good seal. With a bra adjustment buckle to make the breast pump be worn well in mothers\