Feature:1. 2 Modes And 5 Levels: It is recommended to massage before pumping to ensure that each mother can produce more milk in a shorter period of time, giving mothers more choices and comfort.2. Good Sealing: Breast pump accessories are easy to remove and clean while maintaining a good sealing for optimal suction. Maximum suction value range: 280~300mmHg.3. Leakage Proof: The valve helps prevent milk leakage. The breast pump has a capacity of 180ml and the recommended optimal amount of breast pumping is 120ml.4. Low Noise: Innovative suction technology, low noise when using, will not disturb sleeping baby. Equipped with shoulder strap, easy to wear and adjust.5. Portable Design: Simple and clear buttons and indicators for easy adjustment. Built in 800mAh lithium battery, multiple charging modes. Lightweight and compact, perfect for travel use.Specification:Item Type: Wearable Breast PumpMaterial: PPBattery Type: Lithium Battery 800mAh (built in).Package List:1 x Breast Pump1 x Duckbill Valve2 x Sealing Ring1 x Adjustment Shoulder Straps1 x USB Cable1 x Manual