three function:humidification，aroma diffusion and air purification.<br />small size and it is portable.<br />remove unfavorable odors &food smells.<br />removable tank and easy refilling .<br />powered via USB port on your computer.<br />low power consumption.<br />a healthy lifestyle gadget， it is great for your home ，office and car.<br />floating in the water， donut-shaped<br />standby mode， touch switch