General description The White Donut Humidifier is a portable and creative air purifier designed for office and desktop use. It effectively atomizes water to maintain high humidity levels while producing natural negative oxygen ions, which can benefit the cardiovascular system and metabolism. This mini humidifier operates quietly, ensuring it does not disrupt your work or daily life. Its stylish donut shape makes it an attractive addition to any space, making it an ideal gift for family and friends. Technical specifications Product Name: Donut Shape USB Humidifier Material: ABS Shape: Round Color: White Size: 50x50x20 mm Power supply: USB Function: Negative ions Tank capacity: 1 liter or less Number of fog mouths: 1 Mode of operation: Mechanical Water shortage protection: Support Line length: 1 meter Usage It is recommended to use a large cup for water to ensure proper functioning. A small cup may create tension that hinders water flow into the humidifier, affecting the fogging effect.