The USB Donut Humidifier is a mini floating on the freshener that can be used at home, in the office, or while traveling. Its compact and portable design allows you to easily carry it for travel or easy to store it when not in use. Powered by USB, it is convenient and fast to use. Features -Color:Multi -Material:Plastic -Size:5.00X5.00X2.00cm/1.97X1.97X0.79in -Power Supply: USB -Rated Voltage: <=36V -Noise: Less than 36dB -This mini humidifier is designed into a donut shape, which is cute and adorable, can be widely applied. -Its compact and portable size makes it perfect for travel and on-the-go use, allowing you to enjoy its benefits no matter where you are. -With its USB powered feature, this donut humidifier offers convenient and fast operation, allowing you to easily use it with any USB port. -This multifunctional humidifier is suitable for various occasions, such as home, office, hotel, camping and so on. -Made of good materials, this small donuts humidifier is safe and reliable to use, not easy to crack, and can be used for a long time. Package list: 3 x humidifier