High negative pressure, large flux, low noise The design is design with suction bottle hidden inside and circular negative pressure meter crust completely made of plastic It adopts advanced overflow-protection design, which can prevent pus and mucus from leaking into the machine Compact, lightweight and easy to carry especially suitable for emergency and outside use Power consumption: 90 W Maximum negative pressure: ≥0.075 MPa Negative pressure range: 0.02 MPa to Max negative pressure Pump rate: 18L/min Noise: ≤65 dB Bottle volume: 1000 ml Continuous Working Time: 0-30 min, rest Time30min