Serving dual functions of a personal air cooler and an air humidifier, this device is an essential all year round. It will provide a cooling respite in hot summers and humidify dry air in autumn and winter. depending on the chosen speed - Perfect for homes, offices, or outdoor picnics! [700ML Large Water Tank & Long Lasting]With a 700ml sealed water tank, the air conditioner portable can work continuously for 8-10 hours when filled with water, avoiding frequent water refills, and automatically switching to the natural wind when the water runs out, so you don't have to worry about falling asleep. The water level window 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 4-inch six-blade flexible fan blades, maximum wind speed 4.0M/S. 700ML large capacity water tank, one tank of water can be used for 10 hours. Three wind speeds, up and down adjustable wind, two levels of atomization The water tank can be cleaned with a large opening, and water and ice can be easily added. The silicone ring on the water tank cover prevents water leakage, and the water tray at the bottom is available. Four-button touch design, colorful atmosphere lights on the water tank, and high-end handles. Name:Desktop cooling fan Input voltage(V):DC-5V/2A Maximum power(W): less than 7W Working current (mA):(voltage 5V) RGB colored light:≤60mA High-grade atomization:200mA±20% Low-grade atomization:100mA±20% 1st wind speed:250mA±10%,2nd wind speed:450mA±10%,3rd wind speed:760mA±10% .Rotation speed (RPM):1st gear:2150RPM±10%,2nd gear:2750RPM±10%,3rd gear: 3200RPM±10% Wind speed (m/s):(test distance:20cm) 1st gear:2.8m/s±10%,2nd gear:3.8m/s±10%,3rd gear:4.2m/s±10% Noise (dB):less than58dB (Note:test distance 50cm) Function button description: Plug in the TYP-C power cord,all indicators of the machine will flash once