0.070MPa Regulating Range of Negative pressure: 0.02MPa Ultimate Negative Pressure Capacity of liquid storage bottle: 1000mL Input Power: 90VA Suction Pump: Piston Pump Noise:? 65dB (A) Product Size:about 196x235x243mm Voltage:110V Features: -Oil-free high effective piston pump. Package Included: 1 x Portable Phlegm Suction Unit.