3-in-1 Air Cooler: The compact personal air cooler was designed with refrigeration, humidification and air purification function which allows you to creat a personal comfort zone. 7 Colors LED Atmos Lights: The air cooler is built-in soft LED light to help you with better sleep. You can set the light on one you like of its 7 color options or switch off directly at the touch of a button! 3 Gear Wind Speed : 3 gear wind speed for your choice,the fan speed can be adjusted among low, medium, high according to your demands,creat your own personal cooling zone. Charged by USB Built-in water tank: This air cooler can hold for 8 hours as long as you fill the tank; Freon-free, saves energy and protects the environment Easy to use: You can freely move the location of the air conditioner, It is suitable for any room, office, travel, climbing and other activities, You can carry it with you and use it conveniently.