Features: OOTDTY brand new and fantastic 5V USB ultrasonic maker driving force board and atomizer plate. Low using low power, low impedance, steady waveform, high conversion efficiency. Round ring atomizer plate, center 5um ultra-fine aperture, 740 ultra-dense holes. Surface of the atomizing sheet adopts an oxidation-resistant silver layer to guard the coating process, lengthy life. Widely used in the ultrasonic atomization devices, USB humidifier, atomizer, atomizer and different atomization devices. Adopt environmentally pleasant digital components. Specifications: Material: Metal Weight: 10g Size of Circuit Board: 25x37mm/0 Package Includes: 1x Atomization Film+PCB Note: 1 enable 1-2cm errors thanks to guide measurement, just you should definitely don't mind before you order. 2 to the adaptation between assorted monitors, the image will not replicate the actual colour of the item.