Heavy Duty Piston Nebulizer - MMAD ≤2.2 μm; Fine Particle - Dose (FPD): 80-85% - Consistent fine particle size for efficient respiratory treatment - Patented Valve Adjustable nebulizer bottle (VAT) - Low noise with silencer and vibration-absorber design - Fine ventilation design to ensure heavy duty use - Powerful Piston compressor - Mouthpiece and masks for adult and child included - Built-in nebulizer kit holder