1. enjoy three functions;(1) Tower fan - no water. (2) . Cooling fan - add ice crystals. (3) Purification and humidification - adding water. Tower Fan - Anhydrous State - Breeze. Air Conditioning - Add Ice Crystals - Cold Air. Humidifier - Add Water - Moisturize Air 3. If the product you received is not powered, it is recommended to use a 5v2a plug; 4. The product itself is a cooler, not an air conditioner. Compared with ordinary fans, it has upgraded two functions, which can add water or ice. 2. The three-in-one function integrates blowing, cooling and humidification. In addition to the blowing function of traditional fans, it can also filter dust, humidify and blow cool air.Enjoy three functions; 5.1-6 gears can be easily adjusted with one button to provide the wind power you need