*4 Operational ModesThis personal air conditioner is a combination of air cooling fan, humidifier, air purifier and aroma diffuser function with 4 separate buttons, you could add clean water for humidifier function, or add aromatherapy oil for aromatherapy function, it is a good choice as an air purifier for home office *USB Charging PLEASE MAKE SURE TO USE 2A 5V ADAPTER, A USB cable must be connected at work. The output voltage of power supply should be 5V DC and output current should be equal or larger than 2A, so that the air cooler could be started normally *3 Gears and 7 Color Lights This mobile air conditioner has three level wind speeds (high, medium, low) and 90 degree wind direction can be adjusted, you can choose the most suitable one to enjoy your leisure time, sleeping or working time. And the built-in colorful soft LED light not only can create romantic atmosphere, but help you with better sleep. You could set the air cooling fan on one color you like, 7 color-cycle modes, or switch off directly *Easy to Use and Leakproof It is easy to use this personal air cooler. Simply add water, connect the device and turn it on. A large leak-proof water tank prevents water from escaping effectively. This air cooling unit is suitable for all rooms, offices, travel, camping and other activities. We Suggest That Using This Item In The Small Room, Because It Is For Personal Use, It Is Not Suitable For The Whole Family *Environmentally Friendly and Energy-saving Our small air conditioning system is environmentally friendly and uses little energy. It can be charged using a USB cable that allows you to conveniently take the mini air cooler anywhere, even outdoors when your family is on vacation