Features: Suitable Profiles: USB Humidifiers The working conditions:working voltage: less than or less than 60V The working temperature: 85 or less D16mm 108KHz Ultrasonic Mist Maker Atomizing Transducer Ceramic Humidifier Dimensions: 16mm Specifications: Dimensions: 16mm DimensionsWith the Aprons:approx.20mm Voltage:5-12V Resonant frequency: 108KHz Resonant impedance: 52% Package Includes: 1x Ultrasonic Humidifier Accessories note: 16mm diameter is to remove the size of the pastic Ring On the atomization of the film 2 wires, because the batch is not the same, sometimes red and black, sometimes yellow and blue, the other does not affect the use Size for manual measurement, there may be 0 to 2cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!