Powerful airflow. Now 60% quieter.To make fans work quietly, manufacturers use slow-running motors to spin the blades. This reduces noise but also reduces power, producing weak airflow. To make powerful fans, they use fast motors to spin the blades. But fast motors create more noise. Powerful and quiet is very difficult to achieve in a conventional fan. The new Dyson Cool™ fans have been engineered to be quieter, use less energy – yet generate powerful airflow.Air Multiplier™ technologyAir is accelerated through an annular aperture, drawing in surrounding air to project smooth, powerful, high-velocity airflow. No blades. No choppy air.60% QuieterStreamlined air channels for reduced airflow turbulence make AM07 60% quieter than AM02.10% less power consumedEngineered to create powerful airflow using less energy than AM02.Sleep TimerFan can be programmed to turn off after preset intervals ranging from 15 minutes to 9 hours.Oscillation controlOne touch for smoother oscillation.Easy to cleanNo awkward grilles or blades.