General description Enjoy fresh forest air in your home with the 500ml Quiet Ultrasonic Mist Humidifier. This USB-powered humidifier can be used with a power bank, computer, or any other USB power supply. It is designed to improve air quality in small to medium-sized rooms such as bedrooms, baby rooms, offices, and living rooms, making it an ideal gift for parents, friends, and colleagues on various occasions. Technical specifications Water tank capacity: 500ml Spray amount: 30ml-50ml/H Input voltage: DC 5.0V Power consumption: 1.25-2.0W Product size: 95 x 95 x 129 mm Product weight: 236g Usage Two mist modes: Continuous misting (single click) and intermittent misting (double click). To disable misting, triple-click the button. For optimal performance, use clean tap or mineral water; avoid distilled or pure water. Do not use essential oils or perfumes to prevent clogging. Change the cotton swab every 2-4 weeks to maintain product life. Regularly clean the container and misting nozzle