Portable Air Conditioner, Mini Air Conditioner Fan, Air Cooler, Portable Air Cooler with Evaporative Cooling Technology. This personal air cooler draws in warm air and rapidly cools it through water-based evaporative cooling, delivering refreshed and humidified air to your immediate space. Features an adjustable multi-directional air outlet. For enhanced cooling performance, use with ice or cold water. Equipped with 3 wind speed settings. 4-in-1多功能 design functions as a compact air cooler, mini fan, humidifier, and LED light. The built-in colorful LED lights provide a soft ambient glow, ideal for nighttime use and creating a relaxing atmosphere. Lightweight and portable design makes it easy to carry and place in various environments such as home, office, dorm, outdoor picnic, or camping. Operates quietly at 40dB, making it suitable for use in libraries, bedrooms, or workspaces without causing disturbance. Energy-efficient design with a rated power of 3W; does not use harmful refrigerants or a compressor, making it an eco-friendly alternative to traditional air conditioners. Built-in 3600mAh rechargeable lithium battery provides extended runtime. Simply charge via USB cable for cordless operation. Water tank capacity supports evaporative cooling function.