3 in 1 mini personal space air cooler with air humidifier & purifier people often can’t agree on the temperature of a regular wall ac and they have to share it with the whole office. Regular central ac system is uselessly cooling the entire building. Now you can have your personal cooling device, it cools you exactly where you need it, no other device is able to give that cooling performance in such a small size, .it is the most efficient evaporative air cooler of this type Since evaporator is an evaporative air cooler, it takes hot and dry air and makes it cool and moist. Features: create a personal cooling zone-cools temperature of personal space by up to 6 – 8 degrees-strong wind but quietly operation-choose from 3 speeds and adjust the airflow-up to 6-8 hours humidifiering time-low energy consumption-just add water, plug it in, and turn it on. -auto shutoff when out of water-not designed to cool entire room. Note: 1. Keep the small personal air cooler blance, don’t tilt it when working. 2. Add pure water or household tap water, to avoid affecting the cooling function. 3. Adding 3/4 water in the tank is the best, do not full filled. 4. Please run out of the water every time, to prevent the water tank left some scale. 5. Use cup brush or toothbrush clean the water tank once a week, keep clean and healthy.