▶ Portable Suction Device: Phlegm suction machine high negative pressure, large flux and low noise. This is a new mechanism design, the suction bottle is hidden inside, and the square negative pressure instrument housing is made entirely of plastic ▶ Liquid Storage Bottle: Large capacity liquid bottle, split design, convenient disassembly and cleaning, effectively avoid cross infection. Nurses, family members and the elderly can easily get started, which is suitable for hospitals, sanatoriums and families ▶ Easy to Operate: When the pointer reaches 0.075Mpa, it means that the machine is operating normally and you can use it with confidence. If the pointer does not reach 0.075 MPa, the overflow device is leaking ▶ Overheat Protection Function: Since most of the users of this product are elderly people, in order to prevent improper operation, this product can only be used continuously for 30 minutes to protect your health. Therefore, if it is used continuously for 30 minutes, the machine will automatically power off ▶ Oil Free Compressor Pump: The vacuum degree is up to 0.075mPa, the sputum is faster and cleaner, and the pressure can be adjusted freely according to the sputum viscosity. Pure copper wire movement has strong power, good stability and durability