Portable room air conditioner for when you don't want to run the main air conditioner. The mini portable unit cools a room efficiently while helping keep electricity costs low. Key benefits Targeted cooling with low operating costs: reduces reliance on central cooling and lowers energy use. Low noise operation with multiple speeds: three air speeds to match your comfort level. Compact and portable design: easy to move and place in small spaces. Energy saving and performance Efficient power supply and conversion circuit minimize loss, helping you save on electricity and reducing environmental impact. 900 ml water tank can be filled with ice water at the filling port to boost cooling. Easy to use Three speeds for flexible comfort control. Easy setup: pour ice and water into the tank, connect the USB power cord, and adjust the fan speed. The threestep operation cools the surrounding air quickly, delivering a cooler, wetter, and cleaner breeze. Specifications and features Water tank capacity: 900 ml Power: USB powered 3 air speeds Low noise operation Compact, portable design suitable for small rooms Use scenarios Bedroom cooling on hot nights without running the main AC Dorm room or small apartment for comfort Small office or desk area for focused cooling This description stays true to the product's purpose and features: portable cooling, energy efficiency, 900 ml water tank, USB power, three air speeds, and easy 3step operation.