Features of CoolAir that help it achieve what it does are Variable Fan Speed: The fan thats used to blow air from the device to the room is adjustable. There are 3 speeds to choose from depending on how much cooling is required. At the highest speed, it takes just 60 seconds for the room to start cooling down. USB Power: CoolAir needs to be plugged into work. Fortunately, it uses a USB connector, which means in case a power socket isnt available, it can be used by plugging in a laptop or even a car. Portability: It has been mentioned before that the Coolair is portable. It measures 184.108.40.206 inches meaning its a perfect cube and is small enough to fit anywhere. The small size also makes it easy to carry around, which makes it possible to use it in multiple rooms as moving it requires less energy. Adjustable Air Flow: The grilles in front of CoolAir are fully adjustable which means that the airflow coming out of the device can be directed precisely where its needed. For something as affordable, it is a great deal for this adjustment to be included.Refillable Water Tank: As mentioned earlier, CoolAir requires water in order to cool down the air. For that it has a 300ml water tank that is easily refillable. One tank lasts about 8 hours of continuous cooling.