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Specifications

Portable phlegm suction 
Voltage: AC 220±10 V  50HZ  12VDC
Power: 90 w
Max negative pressure: ≥0.075 MPa
Pumping rate: 15L/min
Reservoir capacity: 1000ml
Noise: ≤60dB

it has 3 modes to supply electricity: alternating current, direct current and built-in battery.