Features Small in volume, light in weight, easy to operate, safety andnoiseless in using. Low power consumption(3.7V lithium battery). One button operation, convenient to use. Small in particle size(about 5 um), easy to absorb. Automatic power off when there is no liquid. Functions One-button operation. Atomized liquid. Power indication. Low battery detection. Automatic power off when there is no liquid. Short press the button to change the working mode Rechargeable battery. Performance . Particle distribution: the proportion of particle diameter smaller than 5m is no less than 60% Nebulization rate in level I:0.25ml /min Nebulization rate in level I:0.15mL/min Working frequency: 110KHz+10% Working mode: continuous working Power suppy:3.7V lithium batteryor power adapter(DC 5V) Safety classification: class I1 , type BF applied part Physical characteristicDimension: 67.42 mm(L)X 48.53 mm(WM)X 116.92 mm(H)