Features: OOTDTY Made of effective material, durable, anti-corrosion, anti-aging and immoderate hardness, large influence and serve you for a long for time. With digital high-frequency oscillation ( 2), the liquid water molecules are processed into flowing and launch a large amount of adverse ions, which reacts with smoke, grime and the like floating within the to trigger precipitation. It also can effectively eliminate harmful substances comparable to formaldehyde, carbon monoxide and simply so the would be purified and the could be reduced, hold your and your family's for health. Low impedance, waveform is stable, excessive electromechanical conversion efficiency and low dielectric loss, this atomizer saves more calories than heated atomization. Suitable for industry, warehousing, family, hotel and so on. Specification: Material: Ceramic (20mm is the atomization movie size, ceramic is atomization film material, and the exterior supplies is silicone and metal.) Diameter: Ultrasonic Nebulizer: 2cm/0; Sealing ring: 2/0 Nominal frequency: 2 Adjustable frequency difference: 0 Temperature frequency difference: zero Total frequency difference: zero Load capacitance: 2200pF Load Resonance Resistor: 350Ω Excitation level: 250mW Reference temperature: 26℃ Insertion loss: 3dB Stopband attenuation: 2dB Input impedance: 0Ω Output impedance: 0Ω Color: As photograph shown Quantity: 1Set Note: Please enable 0-1cm error because of instruction manual measurement. pls make sure you do not intellect earlier than you bid. Due to the difference between different monitors, the picture may not replicate the particular coloration of the item. Thank you! Package Includes: 1 Ultrasonic Nebulizer 1xSealing Ring