Specification Name:Misuta breast pumpMaterial:Silicone, PP/PPSU, ABSBottlecapacity:160 ml / 6 oz Nipple hole size:23.5 mmCharging Method: USB 2.0Use time after fully charged: 3 hoursCharging time: 3 - 4 hours to fully chargedBattery capacity: PP/PPSU: 1200 mA ,Upgrade: 1500 mADimensions :150 x 195 x 88 mm / 5.9 X 7.4 X 3.4 inchesSupport for charging while using