Features: 1. Use a variety of methods to atomize water: maintain high indoor humidity and produce a certain amount of natural negative oxygen ions, which can treat and relieve flu, high blood pressure, bronchitis, nervous system and heart. It protects the vascular system and the body's metabolism. 2. The humidifier has a large amount of mist: the water atomization efficiency is high. 3. Quiet working status: It will not affect the working life when in use. Description:Small and stylish design is very suitable to add moisture to your desktop at any time and keep it moist.Specifications:Colors: pink, white, blue Color (optional)Application area: 31-40 square metersFunction: Negative ionWater tank capacity: 1 liter or lessMist outlet number: 1Operation mode: mechanicaltiming function: 2-8 hourswater shortage and power protection: supportpower supply: USBshape: roundSize: 5*2.1cm Noise: 36-45dbRated voltage: 3.0 (V)Rated power: 2 (W)Material: shell ABS wire TPE< ;br/>Package:1 *USB Mini Donut HumidifierNote:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item . We guarantee that the style is the same as the picture. 2. Due to different manual measurements, please allow slight size differences.