Feature:1. Humidifier atomizer, ultrafine spray particles, large atomization, high atomization height.2. Low driving voltage, low power consumption, low impedance, stable waveform and high conversion efficiency.3. Ultrafine spraying, with a pore diameter of about 5m and 1100 holes, which can effectively moisten the air.4. Low dielectric loss, low heat resistance, corrosion resistance, acid and alkali resistance, and long service life.5. Ultrasonic humidifier accessories, easy to install and use, can directly replace old parts.Specification:Item Type: Humidifier AtomizerMaterial: Stainless Steel + RubberWeight: Approx. 3g / 0.1ozVoltage: 5VCurrent: 300mAPower: 2WAperture: 5mNumber of Holes: 1100Punching Area: Diameter 3mm / 0.12inSteel Sheet Diameter: Approx. 16mm / 0.63inOuter Diameter of Rubber Ring: Approx. 20mm / 0.79inResonance Frequency: 108KHz3KHzResonance Resistance: Maximum 100.Package List:1 x Humidifier AtomizerNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.