Feature: 1. Healthy negative ions give you freshness breath and feel the cleaning air brought by negative ions. 2. The large cold wind quickly cools down, and you can add water and ice cubes to the water tank to cool down immediately. 3. Adjustable wind speed, three‑speed wind speed to enjoy good air quietly, to meet your different needs. 4. USB charging fan, when the air‑conditioning fan is out of power, you can also use the power bank to charge. 5. Long battery life, including 2000mAh lithium battery, can be used for a long time. Specification: Item Type: Air Cooler Material: ABS Weight: Approx. 618g / 21.8oz Color: Pink Product Size: Approx. 13x12x12.5cm / 5.1x4.7x4.9in Voltage: 5V Current: 1000mA Power: 4W Motor Speed: 266-3600 rpm Ion Concentration: 1x10^6PCS/cm3 Ozone Concentration: <0.03PPm Water Tank Capacity: 150ml Battery: Polymer Lithium Battery 2000mAh (included) Charging Time: About 3 hours Applicable Time: 8 hours in the first gear, 4.5 hours in the second gear, 2.5 hours in the third gear How to Use: 1. Click the fan button to turn the fan on and off. Click the fan button for the first time to start the fan (default low gear). Click the fan button twice to switch to the second fan gear, and click the gear button three times to switch the fan to the third gear; click the fan button again to turn off the fan 2. Long press the fan button to start and close the negative ion work Package List: 1 x Air Cooler 1 x Manual 1 x Water Bottle 1 x USB Data Cable