brand new and high quality Features: Super fine spray particles, super large amount of atomization, non - wet desktop. Low driving voltage, low power, low impedance, stable waveform, high conversion efficiency. Circuit board using electronic components, environmental for protection. Spray in the middle of the atomization piece, 5um ultra-fine spray aperture, 740 ultra-dense spray hole number. Built-in for protection program, automatically cut off the power after three hours, re-plug the power can be resumed. Specifications: Voltage: DV 5V Current: 300mA Power: 2W Frequency: 108KHz Number of holes: 740 Aperture: 5um Materials: plastic + silicon + electronic components Size: app.5x8.5cm/1.97x3.35in Color: As pictures shown Quantity: 1pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Atomization Piece and Circuit Board Module (other accessories demo in the picture is not included.)