A smart and welcome addition to any desk, Pure Cool Purifying Desk Fan from Dyson works discreetly and efficiently to improve the quality of the air you breathe.Senses particles and gases. Reports them in real timeWith three intelligent sensors, it automatically detects particles and gases in you roomÂ¹, then diagnoses and reports them on the LCD screen.Removes 99.95% of allergens and pollutants from the airÂ¹The fully-sealed 360Â° filter system combines an activated Carbon filter to remove gases, and a Glass HEPA filter that captures 99.95% of microscopic allergens and pollutants.Â²Projects purified air for whole-room purificationUsing Air Multiplierâ„¢ technology, the machine projects over 290 litres of smooth, purified air per second. With a choice of focused and oscillation modes, up to 350Â°.Â³Monitor and control your machine, wherever you areThe Dyson Link app lets you control your machineat home or remotely. It gives you real-time reports on indoor and outdoor air quality, temperature, humidity and filter life.Â³Night time mode. For a comfortable nights sleepUsing the machines quietest setting and a dimmed screen, it continues to monitor and respond to air quality whilst maintaining your target temperature.Automatic modeAuto mode maintains air quality and temperature, so you dont have to You can continue your daily activities, while your purifier automatically monitors and reacts. The machine will continue to remove pollutants and maintain your target temperature.Plus:â€¢ 2 year guarantee â€¢ Easy filter maintenance with built-in reminders to show when each filter needs changingâ´â€¢ Diffused mode. Purify without feeling the airflowâ€¢ Remote controlProduct SpecificationsAssembly RequiredBladelessCable length (m) 1.8Dimensions H69.1 x W35.2 x D22.3 cmFan Diameter 35.2cmPower 40WPower Supply MainsQuiet Mark Remote ControlSpeeds 10Weight 4.65kgÂ¹ PM2.5, PM10, VOCs, NO2Â² Tested to EN1822. Particles as small as 0.1 microns.Â³ In max setting. Tested for filtration efficiency (EN1822) at 0.1 microns and "excellent whole room coverage (TM-003711 and DTM801) in a 27mÂ² room.â´Based on 12 hours use per day. Filter life will vary according to pollution levels.