4 Modes& 12 Suction LevelsThe wearable breast pump supports 4 modes(Massage Mode/ Sucking Mode/ Expression Mode/ 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 Battery& 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-Backflow& 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 Pain& 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: PP+ 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/ 8.5ozPacking List:2* Breast Pump2* Charging Cable