This multifunctional evaporative air cooler integrates cooling fan, nano mist humidifier, temperature detection and timing control into one compact unit. It creates a cool and comfortable microclimate for your desktop, bedroom or small room in hot weather. The built-in water tank releases fine water mist, which cools the airflow quickly while adding moisture to dry indoor air. The digital panel shows real-time ambient temperature and clock time, bringing great convenience for daily use. You can set automatic power-off timing according to your needs, and the child safety lock prevents accidental misoperation. Powered by rechargeable battery and USB cable, this portable cooler can work without plugging in. The slim body takes little desktop space, making it ideal for dormitories, offices, bedrooms and small apartments.