The Ultra-Sonic Room Humidifier Model X21 delivers efficient, whisper-quiet humidity control in a compact 148×148×235mm footprint. Powered by just 3W via standard DC 5V/1A USB input, it's compatible with most chargers and power banks. Ultra-sonic technology provides consistent moisture without noise or high electricity costs. Its sleek design fits seamlessly into bedrooms, offices, or any room. Ideal for dry climates and anyone seeking affordable, convenient humidity relief.