In- Name: Donut Humidifier Product size: 51*51*20MM/2.01*2.01*0.79inch Material: ABS (shell) + TPE (wire) Shape: brSingle weight: 35G Power input; DC5V 500ma The input voltage is 5V, it can work on water, and it has dry-burn protection. Color: white, blue, pink Note: It is recommended to use a cup with a larger cup mouth, because if the cup mouth is smaller, the tension of the water will make it difficult for water to enter the water inlet at the lower part of the humidifier, which will affect the fogging effect. Package: 1*humidifier, 1*USB cable Notice: Please understand that color deviation may vary due to different monitor settings. Due to manual measurement, there will be some errors, which are normal. If you encounter problems, please notify us as soon as possible, we will give you the best service and solve the problem as soon as possible. Thank you. Thank you for your attention, We guarantee the quality of our products.Welcome to visit.Hope you have a nice day!