Features: Invisible Wearable Breast PumpThe hands free breast pump can be wear under nursing bra(not included) well for more convenient pumping. Quick to assemble, easy to clean. No cord, no wardrobe changes and no fuss. 2 Modes & 9 Suction LevelsThe wearable breast pump supports 2 modes(Massage Mode/ Expression Mode), and each mode has 9 adjustable suction levels. Mothers can find a suitable suction level easily for efficient pumping. Built-in Battery & Low Noise WorkingBuilt in 1000mAh rechargeable lithium battery, long working time and can be charged by the included USB cable quickly. Low noise working, will not disturb your sleeping baby. Anti-Backflow & No LeakageAdopts anti-backflow and seal system design, the wearable breast pump can prevent the breast milk from being contaminated and leakage. The breast cover can store 180ml milk. No Pain & Fits Well24mm flange is suitable for most breast size; made of soft silicone material, which will not cause pain and maintain a good seal. Compact and lightweight, can be put into backpack for convenient carry. Specifications: Material: PP + Silicone Flange Diameter: 24mm Storage Capacity: 180ml Modes: 2 Suction Level: 9 Battery Capacity: 3.7V 1000mAh Charging Port: Type-C Charging Voltage: 5V 1A Item Size: 11 * 12 * 6cm/ 4.3 * 4.7 * 2.5in Item Weight: 225g/ 7.9oz Packing List: 2 * Breast Pump 1 * Charging Cable 1 * Bra Adjustment Buckle 1 * Users Manual(English)