"brand new and high quality\nFeatures:\nMade of high quality ceramic, it is solid, durable and anti-aging, long service life.\nIt features high frequency that provides fine mist to you, high working efficiency.\nIts diameter is 20mm, easy to install and replace.\nGreat tool of humidifiers.\nMist maker disc only, other accessories demo in the picture is not included!\n\nSpecification:\nMaterial: Ceramic, Metal (20mm is the atomization film size, ceramic is atomization film material, and the exterior material is silicone and metal.)\nDia.: app.2cm/0.79in\nOptional nominal frequency: 113/108 KHz\nAdjust the frequency difference: 0.003 MHz\nTemperature frequency difference: 0.003 MHz\nTotal frequency difference: 0.003 MHz\nLoad capacitance: 3200pF\nLoad resonance resistance: 60\nExcitation level: 0.5mW\nReference temperature: 26/78.8\nInsertion loss: 3 dB\nStopband attenuation: 2dB\nInput impedance: 0.2k\nOutput impedance: 0.2k\nColor: White\nQuantity: 1 Pc\n\nNote:\nNo retail package.\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 x Mist Maker Ceramic Discs":