This great-value air-cooler is an affordable, eco-friendly, and incredibly effective way to keep cool. It uses the power of evaporative cooling to chill the air, creating a natural, refreshing breeze. As evaporative cooling is a natural process, it uses barely any electricity this model uses just 75W, so its eco-friendly and cheap to run. Turn on the negative ion function to release large quantity of anions which help in the removal of airborne pollutants as small as .01 micron such as allergens, pollen, mould, smoke, pet dander, unpleasant odours, dust, and other airborne irritants. You can control this air cooler by using the buttons on top of the unit or the included remote control. If you want to be able to adjust your air cooler settings without leaving your seat, this is the model for you! Evaporative cooling uses a tank of water which, as it evaporates, cools the air. Youll need to refill this tank of water on occasion, but luckily, this model makes this a breeze. At the top of the unit is a spout which allows you to fill the tank without removing it. Just pour in your water, turn the air cooler on, and feel the chill! If you have a single air cooler that you want to move around several rooms in your home or office, this is a useful feature! Stay in control over your own comfort by selecting one of three fan speed settings. You can also turn the oscillation (swing) setting on or off at the push of a button to completely control the airflow.