Features: Portable phlegm suction unit Streamline shape Easy to carry Heat release system Circular negative pressure meter Half hidden liquid storage bottle Detachable power line Low noise, stepless pressure adjustment, streamline modelling. Oil free pump. Technical data: Input power: 90VA Max negative pressure value: ≥0.075MPa Pumping rate: ≥15L/min Noise: ≤ 65dB (A) Reservoir volume: 1000mL, 1piece Working system: short running Warranty: 1 year warranty from manufacturing defect. How to Use? 1. Connect all tube as shown in picture below. Don't misplace the tube. 2. Connect cable. 3. Turn ON button 4. Connect catheter to the end of long tube. 5. Regulate pressure. to decrease turn left, to increase power turn right. block the long tube to check the pressure gauge and turn the regulator until required pressure. 6. Empty bottle after every use to avoid overflow.