*High negative pressure, large flux, low noise *It is brand new mechanism design with suction bottle hidden inside and square negative pressure meter crust completely mad of plastic *Portable, lightweight and easy to carry *This design not only reduces the working noise but also makes it more fashionable and precise *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