General description Mini Portable USB Humidifier is an ultrasonic cool mist humidifier designed for home and office use. It features a no water tank design, allowing it to be used with various containers such as standard glass bottles or mineral water bottles. This humidifier provides deep moisturizing for the skin, helping to alleviate dryness and maintain a comfortable health state. Technical specifications Type: Ultrasonic cool mist humidifier Power source: USB (compatible with computers, power banks, AC adapters, and other USB devices) Operation time: Up to 8 hours of continuous spray Usage Fill the container with about 90% mineral water or fresh boiling water. Insert the humidifier into the container, ensuring the cotton core is soaked in water for 5-10 seconds. Connect the USB power supply. Press the power switch to activate the spray mode.