This portable USB mini evaporative air cooler integrates cooling and humidifying functions, equipped with 9 high-pressure spiral fan blades and a 500ml top-fill sealed water tank that supports ice cubes for stronger cooling effect. It offers 2 wind speed levels and 2 mist modes, with a 15° adjustable louver to customize wind direction. Low-noise sleep-friendly operation with dim night indicator light. Universal USB power supply works with power banks, laptops and car chargers, ideal personal cooling device for bedroom, office desk, dorm and vehicle travel. Compact lightweight body saves desktop space, eco-friendly water cooling without harmful refrigerant.