Energy-Saving Eco-Friendly Compared with your costly A/C, this portable air cooler has no compressor and does not use chemical refrigerants and it is more environmentally friendly and safe for your health. It blows out cold air through water evaporation which feels really refreshing, instead of circulating warm air like a regular fan. You can easily enjoy extra coolness in seconds at a low cost. 3-in-1 Portable Air Conditioner This personal air conditioner can be served as a fan, mini air conditioner, also a humidifier, providing you best cooling in an easy-to-use way. Adding some ice and water into the water tank for evaporative cooling, our portable AC will release cool moist air to prevent your skin from drying out. Keep cool and comfortable with our portable air conditioner fan anywhere. 600ML Large Water Tank Long LastingPortable Air Cooler with a 600ml water tank, the air conditioner portable can work continuously for 5-6 hours when filled with water, avoiding frequent water refills, and automatically switch to the natural wind when the water runs out, so you don't have to worry about falling asleep. The transparent water tank allows you to check and control the water level at any time. The top water tank design increases the convenience of adding water and prevents water leakage.