Standard USB Connection & Easy Control: Works with common USB power supplies ( 5V / 2A) Designed with textured air inlet for better circulation, simple button controls for speed / selection 3 Speed Adjustable Fan with Cooling: This compact fan proposals 3 selectable ventilation settings ( strong / gentle / mild) to meet different cooling needs Combined with water dispersion feature, it effectively reduces temperature while adding to dry air, perfect for warm weather in offices, study areas, or bedrooms ABS Build with Handle: Made from robust ABS, this lightweight unit ( 678g) resists daily wear and stays clean Quiet Setting with Gentle ventilation & Cool: Includes a special nighttime option producing low sound air movement ( 12V) with fine water particles for evening comfort Three Dispersion Outlets & Spacious Water Holder: Features 3 individually adjustable outlets for customized humidity