Support two way power supply, you can power it by insert 2*AA (AA are not included), or you can charge it with USB cable while using. ?Suitable for All Ages?Equipped with 1pcs atomizing mouthpiece and 1 adult mask and 1 child maskin different size variations to widely suitable for kids and adults, three different working modes can provide custom nebulization intensity for multipurpose application demands.The silent design make this inhaler suitable for adults, kids and all ages. ? Two Operation Modes? This item has two operation modes, the first one is a mild mode recommended for children. After turning it on, press the button again to use the strong mode suitable for adults.Choose the mode you need. ? Portable and Convenient?Self cleaning mode can clean the residual liquid on the atomized sheet to prevent clogging and maintain a long lasting reliable atomization performance. ?Upgraded Super Larger Mist, Strengthen Absorption Thoroughly? Adjustment atomization rate: 0.3 ml/min - 0.55 ml/min. Atomization particles:1µm-2.3µm. It means that this Nebulizer Creat fine mist to absorb small particles better. Minimize waste <0.01 ml, more efficient in delivery. Our latest microporous direct atomization technology can effortlessly turn the drug into tiny particles to easily deliver even and fine mist with constant and mild atomization rate, which will improve the absorption.