4 Modesandamp 12 Suction LevelsThe wearable breast pump supports 4 modes(Massage Mode or Sucking Mode or Expression Mode or Expression Mode with different speed), and each mode has 12 adjustable suction levels. Mothers can find a suitable suction level easily for efficient pumping.Built-in Batteryandamp Low Noise WorkingBuilt in 1100mAh rechargeable battery, long working time and can be charged by the included USB cable quickly. The sound of the wearable breast pump is less than 40dB during working, which will not disturb your baby or get others attention.Anti-Backflowandamp No LeakageAdopts anti-backflow design and a seal system, wearable breast pump can the breast milk from being contaminated and leakage. can store 180ml milk.No Painandamp Fits Well112.2mm breast cover is suitable for most breast size, and 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: PPand 43 SiliconeBreast Cover Diameter: 112.2mmStorage Capacity: 180mlModes: 4Suction Level: 12Battery Capacity: 3.7V 1100mAhCharging Port: Type-CCharging Voltage: 5VCharging Time: About 2HBattery Life: About 1.5H after being fully chargedItem Weight: 242g or 8.5ozPacking List:2x Breast Pump2x Charging Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.