【3 Modes & 9 Suction Levels】 The electric breast pump has 3 modes(Massage Mode/ Expression Mode/ Massage & Expression Mixed Mode), and each mode supports 9 adjustable suction levels. 【Anti-Backflow & No Leakage】 Built-in anti-backflow cylinder that separates the milk from the air flow and prevents milk returning to cause secondary pollution, safe to use. 【Easy to Clean】 Each component can be flexibly assembled and disassembled. Except for the electrical parts, all other removable parts are dishwasher safe, easy to clean. 【Built-in Rechargeable Battery & Low Noise Working】 Built in 1800mAh battery, long working time and can be charged by the included USB cable quickly. The sound of the breast pump is very low during working, which will not disturb your baby. Specifications: Material: PP ' Silicone Mode: Massage Mode/ Expression Mode/ Massage & Expression Mixed Mode Suction Level: 9 Bottle Capacity: 180ml Battery Capacity: 3.7V 1800mAh Charging: 5V 1A USB Fixed Working Time: 30 minutes Sucking Power: 60mmhg-380mmhg Noise Limited: <68dB Packing List: 1 * Breast Pump with Milk Bottle 1 * Milk Bottle Nipple 1 * Milk Bottle Cover 1 * USB Power Cable 1 * Users Manual(English)