Main Features: -Super Water Cooling: Insert the cooling pad into the water tank at a depth of 4cm,30 seconds immediately cool down to the lowest.  -Nano Cooling Pad: Water absorption fast, cooling effect is good.  -Stepless Speed Regulation: Stepless speed, feel free to adjust the wind speed, 360° knob switch combine into one,simple and easy to control.  -Energy Saving and Low Consumption: MAX power is 6W, use 6 hours a day,1KWH can work 28 days.  -Wireless Use: USB power supply, 4000mAh long battery life.  -Negative Oxygen Ion Purification: Negative oxygen ion purification, smoke removal and sterilization, makes people feel like absorbing oxygen in the rain forest.  -Brushless DC Motor: Super long life, all copper coil, stable and reliable, turbocharged.  -Magnetic Water Tank Cover: It can be opened and closed quickly, and it is convenient to fill water.    Specification Voltage: 5V;  Current: 2A;  Max Power: 10W;  Water Tank Capacity: 500ml;  Water Consumption: 4-8h;  Cool Duration: 5-10h;  Wind Speed: 2.5m/s;  Spray Volume:150ml/h;  Noise: 19dB;  Temperature Decrease: 4-13℃;  Suggested Using Space: 4m²/8m³;  Continuous Using Time: 9h(lowest speed) / 4h(highest speed);  Battery Information Battery Type: Li-ion battery;  Battery Capacity: 4000mAh;  Dimension Product Weight: 0.84kg ;  Package Weight: 0.9kg ;  Product Size: 14.90 x 17.00 x 17.40 cm;    Package Contents 1 x Portable Air-Conditioning,  1 x Cooling Pad,  1 x USB Cable,  1 x Manual