Keep Cool in Summer: After sucking in hot air, the multifunctional air cooler evaporates the water in the tank, which becomes too cold, and is blown out to quickly cool the hot air around you. Note: If you want to enjoy fast cooling, just put ice cubes and 20ml water in the water tank. 4 in 1 Multifunction: The evaporative air conditioner can be a cooling fan , a humidifier, an aroma diffuser or an LED night light. It comes with 3 wind speeds you can choose from. EASY TO USE: Just put water or ice cubes in the reservoir and turn it on. At the top is a function switch for turning on and changing the necessary modes. You can adjust the speed from high speed mode to low speed mode. The filter can also be removed for easy cleaning. It is recommended to clean it once or twice a month. USB charging: This air cooler is powered by USB. For the heatsink to work properly, please use a 5V 2A adapter, the power adapter is not included. Portable space fit: whether at home, in the office, in the the bedroom, in the kitchen or outdoors, the cooler creates a personal comfort zone for you. This fan is for personal use and does not cool the room, please do not place it too far away from you. It would be a great gift for your friends and family.