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 protection. in the middle of the atomization piece, 5um ultra-fine aperture, 740 ultra-dense hole number. Built-in protection program, automatically cut off the power after three hours, re-plug the power can be resumed. 100% new and high quality Voltage: DV 5V Current: 300mA Power: 2W Frequency: 108KHz Number of holes: 740 Aperture: 5um Colour:As Shown Material:plastic Package Contents: 1 x circuit board 1 x Atomization film Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.